From root@crcnis1.unl.edu Mon Jul 3 19:01 EDT 1995
Date: Mon, 3 Jul 1995 18:00:56 -0500
Message-Id: <9507032250.AA17581@sunsite.oit.unc.edu>
From: listserv@unl.edu
Subject: GET SOILS-L LOG9406

Archive SOILS-L: file log9406, part 1/1, size 53959 bytes:

------------------------------ Cut here ------------------------------


From jp@unlinfo.unl.edu Fri Jun 3 13:27:12 1994
From: jp@unlinfo.unl.edu (jerome pier)
Message-Id: <9406032327.AA19716@unlinfo.unl.edu>
Subject: May Archives now available
Date: Fri, 3 Jun 1994 18:27:12 -0500 (CDT)

Dear List Subscribers,

The May archives are now avaiable for Agmodels-L and
Soils-L. To retrieve the archives send the following email
message to listserv@unl.edu:

get LISTNAME log9405

where 'LISTNAME' refers to either agmodels-l or soils-l. If you
have any difficulty accessing the archives let me know.

Sincerely,

Jerome Pier
Agmodels-L and Soils-L List Owner
jp@unl.edu



From robh@u.washington.edu Mon Jun 6 05:10:08 1994
Date: Mon, 6 Jun 1994 12:10:08 -0700 (PDT)
From: Rob Harrison <robh@u.washington.edu>
Subject: Forest soils of Argentina
Message-Id: <Pine.3.89.9406061255.A10938-0100000@carson.u.washington.edu>

Does anyone out there have any information, or can they lead us to any
source or anyone with, information on Forest soils of Argentina. In
particular, an individual in that country would be of great help.

Stan Gessel and Rob Harrison

Stan Gessel <sgessel@u.washington.edu>,
Robert Harrison <RobH@u.washington.edu>


From gail@arrc.ncsu.edu Tue Jun 7 06:29:17 1994
Date: Tue, 7 Jun 1994 10:29:17 -0400 (EDT)
From: Gail Olson <gail@arrc.ncsu.edu>
Subject: Moisture release curves and K
Message-Id: <Pine.3.05.9406071046.A7006-7100000@essnvd5.arrc.ncsu.edu>

I was wondering if there is any way to predict K from data from a moisture
release curve, and if not, why not?

gail



From ypachepsky@asrr.arsusda.gov Tue Jun 7 04:01:33 1994
Date: Tue, 7 Jun 94 11:01:33 PDT
From: ypachepsky@asrr.arsusda.gov
Subject: RE: Moisture release curves and K
Message-Id: <Chameleon.4.00.4.940607112643.yakov@Fairy.arsusda.gov>

A lot of work has been done to predict soil hydraulic conductivity
from water retention data. I would recommend to look through a
book
M.Th. van Genuchten, F.J.Leij, L.J.Lund (Eds.).1992. Indirect methods
for Estimating the Hydraulic properties of Unsaturated Soils.
Proceedings of the International Workshop on Indirect Methods for
Estimating the hydraulic properties of Unsaturated Soils. Riverside
California, October 11-13, 1989. University of California,
Riverside,CA.
My perception is, that, in general, one can predict a ratio of the
unsaturated hydraulic conductivity values to the value of saturated hydraulic
conductivity from water retention data for soil water potentials lower than
approximately - 10... - 20 kPa. For higher potentials, predictions are
uncertain because of the uncertainity in description of the connectivity of
the pore network.
-------------------------------------
Name: yakov pachepsky
E-mail: yakov@Fairy.arsusda.gov (yakov pachepsky)
Date: 05/17/94
Time: 15:27:15

This message was sent by Chameleon
-------------------------------------



From p00038@psilink.com Tue Jun 7 17:10:45 1994
Message-Id: <2980123438.0.p00038@psilink.com>
In-Reply-To: <Pine.3.89.9406061255.A10938-0100000@carson.u.washington.edu>
Date: Tue, 07 Jun 94 21:10:45 -0400
From: "FEWS Internet Sysop" <p00038@psilink.com>
Subject: Re: Forest soils of Argentina

>DATE: Mon, 6 Jun 1994 14:07:53 -0500
>FROM: Rob Harrison <robh@u.washington.edu>
>
>Does anyone out there have any information, or can they lead us to any
>source or anyone with, information on Forest soils of Argentina. In
>particular, an individual in that country would be of great help.
>
>Stan Gessel and Rob Harrison
>
>Stan Gessel <sgessel@u.washington.edu>,
>Robert Harrison <RobH@u.washington.edu>

Hi,

There is an Agroforester at the University of Cordoba (Argentina) who can help you
to obtain information on forest soils. His name and address follows:

Prof. Ola Ulf Karlin
Facultad de C. Agropecuarias
Universidad Nacional de Cordoba
C.C. 509 Cordoba 5000
Argentina
FAX 5451-681765

Good luck.


From Y.Zhou@geography.hull.ac.uk Fri Jun 10 14:35:15 1994
Message-Id: <23941.9406101235@humus.hull.ac.uk>
Subject: binding soil particles
Date: Fri, 10 Jun 1994 13:35:15 +0100 (BST)
From: "Y.Zhou" <Y.Zhou@geography.hull.ac.uk>

Dear Colleagues, is there anybody know any METHOD to study the mechanical
role of plant root systems to bind top soil particles against soil
erosion? Is there any MODEL available to quantify the effect? I just moved
in this area and eagerly want to know about these for my research. If you
have such info, would you please tell me who I can contact with and which
publication I can search for relevant articles? I greatly appreciate your
help. Many thanks in advance.

Y. Zhou

School of Geography and Earth Resources
The University of Hull, Hull, HU6 7RX, UK
Email: y.zhou@geo.hull.ac.uk



From GBTA22@vms3.gla.ac.uk Fri Jun 10 16:16:00 1994
Date: Fri, 10 Jun 94 16:16 GMT
From: GBTA22@vms3.gla.ac.uk
Subject: RE: binding soil particles
Message-Id: <"jess.glasg.411:10.05.94.15.16.51"@jess.glasgow.ac.uk>

Unsubscribe


From danielm@extro.ucc.su.OZ.AU Mon Jun 13 22:01:25 1994
Date: Mon, 13 Jun 1994 12:01:25 +1000 (EST)
From: Daniel Martens <danielm@extro.ucc.su.OZ.AU>
Subject: Re: binding soil particles
In-Reply-To: <23941.9406101235@humus.hull.ac.uk>
Message-Id: <Pine.3.89.9406131113.A22494-0100000@extro>

I was wondering if anybody out there might be able to give some direction
regarding luxurient plant nutrient (P and N) uptake in aeras irrigated by
treated wastewater. I'm currently finishing my PhD at Sydney University,
Australia, and have been looking at the impact of on-site wastewater
disposal systems on soil chemistry and urban runoff. My readings suggest
that luxurient nutrient uptake rates for grass are of the order of
300-400 kg/ha/yr N and 100-150 kg/ha/yr P. My questions specifically
revolve around whether these rate represent reasonable assumptions and
what specific recent reference(s) exist that deal with the issues of
nutrient uptake. I look forward to any information. Thankyou.

Daniel Martens


From DON@TIFTON.CPES.PEACHNET.EDU Mon Jun 13 13:21:33 1994
Message-Id: <199406132120.AA20770@crcnis1.unl.edu>
Date: Mon, 13 Jun 94 17:21:33 EDT
From: DON WAUCHOPE <DON@TIFTON.BITNET>
Subject: Re: binding soil particles
In-Reply-To: Message of Sun, 12 Jun 1994 21:00:49 -0500 from

On Sun, 12 Jun 1994 21:00:49 -0500 Daniel Martens said:
>I was wondering if anybody out there might be able to give some direction
>regarding luxurient plant nutrient (P and N) uptake in aeras irrigated by
>treated wastewater. I'm currently finishing my PhD at Sydney University,
>Australia, and have been looking at the impact of on-site wastewater
>disposal systems on soil chemistry and urban runoff. My readings suggest
>that luxurient nutrient uptake rates for grass are of the order of
>300-400 kg/ha/yr N and 100-150 kg/ha/yr P. My questions specifically
>revolve around whether these rate represent reasonable assumptions and
>what specific recent reference(s) exist that deal with the issues of
>nutrient uptake. I look forward to any information. Thankyou.
>
>Daniel Martens
Richard Lowrance and Bob Hubbard here at Tifton have been working in this area;
You might send them an e-mail request for info at rlowrance@tifton.cpes.
peachnet.edu or rhubbard, same node.

R. DON WAUCHOPE, RESEARCH CHEMIST DON@TIFTON.CPES.PEACHNET.EDU
USDA AGRICULTURAL RESEARCH SERVICE (912) 386-3892 FAX 386-7225
POB 748, U. GA COASTAL PLAIN EXPERIMENT STATION
TIFTON, GA 31793


From GBTA22@vms3.gla.ac.uk Tue Jun 14 14:44:00 1994
Date: Tue, 14 Jun 94 14:44 GMT
From: GBTA22@vms3.gla.ac.uk
Subject: Re: binding soil particles
Message-Id: <"jess.glasg.298:14.05.94.13.44.03"@jess.glasgow.ac.uk>

Unsubscribe


From TBayless@aol.com Tue Jun 14 13:22:18 1994
From: TBayless@aol.com
Message-Id: <9406141722.tn1193815@aol.com>
Date: Tue, 14 Jun 94 17:22:18 EDT
Subject: Re: binding soil particles

Who is asking me to unsuscribe and why?



From Y.Zhou@geography.hull.ac.uk Sat Jun 18 23:42:58 1994
Message-Id: <28761.9406182142@humus.hull.ac.uk>
Subject: forest and slope stability
Date: Sat, 18 Jun 1994 22:42:58 +0100 (BST)
From: "Y.Zhou" <Y.Zhou@geography.hull.ac.uk>

Dear Masoud and all colleaques

The term "root reinforcement" I mentioned last time could means the effect
of plant root systems on reinforcing the soil mass the roots are growing in
against shearing force, by binding soil particles togather. Roots embeded in
soil form a composite material comsisting of fiber (roots) of relatively high
tensile strenth. Because roots can increase soil strength at some extent,
root reinforcement has been used on slope protection and stabilisation in
many places in the world. It is a biotechnical or bioengineering tools for
both natural and artifical slopes. Unfortunately, there are few people who
did and are still doing this kind of research, and hunting the relevant
reference seems very diffecult. I have been studying in this for only one
year. I am not very sure how the academic world think about the role of
forest on stabilising slopes.

Do you believe root reinforcement? How do you think about it? Would you
please tell me where I can get reference and who I can contact? Thanks!

Y. Zhou
School of Geography and Earth Resources
The University of Hull, Hull, HU6 7RX, UK
Email address: y.zhou@geo.hull.ac.uk



From razman@mindspring.com Sun Jun 19 19:24:22 1994
Message-Id: <199406200424.AAA28679@mindspring.com>
Date: Mon, 20 Jun 1994 00:24:22 -0500
From: razman@MindSpring.COM (Richard Schreiber)
Subject: Intro from Rev. Radon and a "Burning Question"

My name is Richard A. Schreiber (known normally as Raz) and I am the State
Radon Program for Georgia (pun intended). Most of my background is in
radiation, from spent fuel cask design and analysis to radiation emergency
response to envrionmental radiation (in this case, radon). I work for the
Office of Environmental Health in the Georgia Department of Human Resources.

I am developing a radon in indoor air study for Georgia as a part of the
State Indoor Radon Grant from the USEPA. This study will geolocate test
results over geology formations with the intent of identifing percentage of
homes in excess of selected picoCurie values. This will eventually be part
of a zipcode base Radon Potential Map for use in new construction building
codes for radon
resistant construction. So far I have data layers on expected sub-surface
ppm of Uranium and Thorium and soon hope to add the NURE data and soil
classifications.

My "burning question" revolves around radon in soil. Since I wish to include
soil classification as a part of this radon potential model, where do I
START? First, I need to identify a database of soil classifications (for
Georgia) to import into my GIS data layers (I'm using Atlas*GIS). Second,
what characteristics of soil classification would make a direct impact on
radon migration to the building foundation for building entry? [One paper I
have seen indicates that thorium migrates from surface soils down to the
1.5m level, which would be about at the level of the stem wall/slab joint.]
And, in general, do any of you have any thoughts?

I do have an extended status report, omitted here for bandwidth conservation.

Thanks for your reading time, we all have too little of it.
_______________________________________________________________
Richard A. Schreiber "Remember that in
the US
Georgia Radon Program dyslexia strikes every
ten wrods."
Voice: (404) 657-6534
FAX : (404) 657-6533
E-Mail: razman@mindspring.com
_______________________________________________________________



From BDWG@VMD.CSO.UIUC.EDU Fri Jun 20 01:14:40 1994
Message-Id: <199406201115.AA29984@crcnis1.unl.edu>
Date: 20 Jun 1994 06:14:40 CDT
From: <BDWG@vmd.cso.uiuc.edu>
Subject: Radon in soils

Hello;

R. Schreiber asked for information regarding Radon databases. One source....

Dr. R. L. Jones
University of Illinois
Department of Agronomy
N-407 Turner Hall
1102 S. Goodwin
Urbana, IL 61801
(217) 333-9490

Dr Jones has found that Radon levels in soils correlate very well with parent
material (obvious) and drainage class in Illinois.

W. P. Gates


From malik@Dogon.geomin.unibo.it Mon Jun 20 16:30:32 1994
Date: Mon, 20 Jun 94 14:30:32 +0200
From: malik@Dogon.geomin.unibo.it (F. Malucelli)
Message-Id: <9406201230.AA10746@Dogon.geomin.unibo.it>
Subject: Re: Radon in soils

Dear subscriptor, Prof Fabrizio Aumento is currently working on
Radon in Azorian soils.
his address is:

Prof. Fabrizio Aumento
Rua N. S. Necessidades, 101
Livramento 9500 Ponta Delgada
S. Miguel Azores Portugal
Tel/Fax:+351-96-33294

Best wishes

Francesco Malucelli

Dip. Scienze Geologiche
Universita' di Bologna
via Zamboni,67
40127 Bologna Italy

Voice: +39-51-354561 Fax: +39-51-354522

E-mail: malik@geomin.unibo.it
malik@o3.fisbat.bo.cnr.it
doc2@scgebo.cineca.it
38144::doc2
*******************************************



From rfindley@nature.Berkeley.EDU Tue Jun 21 03:26:00 1994
From: Rachel Findley <rfindley@nature.Berkeley.EDU>
Message-Id: <199406211726.KAA26512@nature.Berkeley.EDU>
Subject: Re: forest and slope stability
Date: Tue, 21 Jun 1994 10:26:00 -0700 (PDT)
In-Reply-To: <28761.9406182142@humus.hull.ac.uk> from "Y.Zhou" at Jun 18, 94 04:51:48 pm

Hello, Dr. Zhou,

I am a first-year graduate student at Berkeley studying soil science,
and I am also interested in the role of roots in stabilizing slopes.
I haven't done research in this area, so I can't help you in your
search for references, but the foresteres at Berkeley often refer to
the loss of the stabilizing influence of roots as a cause of
landslides that often occur on steep slopes several years after they
have been logged.

I would be interested to hear of the results of your search, and
what your specific area of interest is.

Sincerely,
Rachel Findley

rfindley@nature.berkeley.edu


From rfindley@nature.Berkeley.EDU Tue Jun 21 03:36:10 1994
From: Rachel Findley <rfindley@nature.Berkeley.EDU>
Message-Id: <199406211736.KAA27122@nature.Berkeley.EDU>
Subject: Re: Intro from Rev. Radon and a "Burning Question"
Date: Tue, 21 Jun 1994 10:36:10 -0700 (PDT)
In-Reply-To: <199406200424.AAA28679@mindspring.com> from "Richard Schreiber" at Jun 19, 94 11:38:02 pm

Karina Garbesi has been doing research on how radon moves through soil.
She's at Lawrence Berkeley Lab.

I don't have an address for her with me here--I just see her around
occasionally--but if you like, e-mail me back and I will find out how
to get in touch with her.

One thing she's found is that the large-scale structure as well as the small-scale structure of the soil is very important--root channels, big animal
holes, etc. as well as smaller pores.

Good luck!

--Rachel Findley
rfindley@nature.berkeley.edu



From lwu@soils.umn.edu Tue Jun 21 09:06:14 1994
From: "lwu" <lwu@soils.umn.edu>
Date: Tue, 21 Jun 94 15:06:14 CST
Message-Id: <79.lwu@soils.umn.edu_POPMail/PC_3.2.3_Beta_2>

signoff L. Wu


From srawlins@beta.tricity.wsu.edu Wed Jun 22 07:12:00 1994
Date: Wed, 22 Jun 1994 14:12:00 -0700 (PDT)
From: "Stephen L. Rawlins" <srawlins@beta.tricity.wsu.edu>
Subject: Re: forest and slope stability
In-Reply-To: <199406211726.KAA26512@nature.Berkeley.EDU>
Message-Id: <Pine.3.89.9406221453.A19964-0100000@beta.tricity.wsu.edu>

Larry Waldron at Berkeley did some research on soil failure on slopes.
You may be able to find his work in the departmental library.

On Tue, 21 Jun 1994, Rachel Findley wrote:

> Hello, Dr. Zhou,
>
> I am a first-year graduate student at Berkeley studying soil science,
> and I am also interested in the role of roots in stabilizing slopes.
> I haven't done research in this area, so I can't help you in your
> search for references, but the foresteres at Berkeley often refer to
> the loss of the stabilizing influence of roots as a cause of
> landslides that often occur on steep slopes several years after they
> have been logged.
>
> I would be interested to hear of the results of your search, and
> what your specific area of interest is.
>
> Sincerely,
> Rachel Findley
>
> rfindley@nature.berkeley.edu
>


From lwu@soils.umn.edu Wed Jun 22 10:26:30 1994
From: "lwu" <lwu@soils.umn.edu>
Date: Wed, 22 Jun 94 16:26:30 CST
Message-Id: <150.lwu@soils.umn.edu_POPMail/PC_3.2.3_Beta_2>

SIGNOFF L. Wu


From Craul@agronomy.cas.psu.edu Mon Jun 27 02:02:00 1994
Date: Mon, 27 Jun 1994 09:02:00 -0700 (PDT)
From: "Craul, Timothy A." <Craul@agronomy.cas.psu.edu>
Subject: greetings
Message-Id: <2E0EF97B@agronomy.cas.psu.edu>

Greetings:

My name is Timothy A. Craul and I am stationed at Penn State with the USDA
Soil Conservation Service as a Field Soil Scientist. I am just finishing up
the Pike County Pennsylvania Soil Survey Update which is to be available in
digital format soon. I am also working on the Clinton County Soil Survey
Update as well as trying to get a Masters in Soil Science.

My professional experience started in Kentucky with the Fleming County Soil
Survey in 1986 as a Soil Scientist with the State of Kentucky. I also had a
chance to work in 3 other counties surrounding Maysville, KY. I then moved to
the SCS in Doylestown, Pennsylvania in 1988 where the DDRP acid precipitation
study was going full force. After spending 7 months on Acid Rain Sampling I
worked in Bucks, Lehigh, and Northampton Counties. In 1989, the Food Security
Act required mapping of HEL land in the midwest, so details were the order of
the day. After spending several months working on the Hancock County,
Illinois soil survey I transferred to the glacial Poconos for the Pike County
Soil Survey Update. In December of 1993 another transfer to Clinton Co.
survey came through. Now I can have access to e-mail and other such amenities
that were seriously lacking in the mountains of the Poconos.

The things that interest me the most are soil genesis and geomorphology, soil
variability and GIS's use of soil survey data.

My burning question is for the users of the soil surveys.
WHAT WOULD YOU LIKE IN A SOIL SURVEY DIGITAL DATABASE?

Thanks

Tim Craul
USDA-SCS, PSU

e-mail CRAUL@AGRONOMY.CAS.PSU.EDU



From Craul@agronomy.cas.psu.edu Mon Jun 27 02:06:00 1994
Date: Mon, 27 Jun 1994 09:06:00 -0700 (PDT)
From: "Craul, Timothy A." <Craul@agronomy.cas.psu.edu>
Subject: info
Message-Id: <2E0EFA71@agronomy.cas.psu.edu>

index



From GEPHILLI@ECUVM.CIS.ECU.EDU Mon Jun 27 06:33:48 1994
Message-Id: <199406271434.AA28527@crcnis1.unl.edu>
Date: Mon, 27 Jun 94 10:33:48 EDT
From: "JONATHAN D. PHILLIPS" <GEPHILLI@ECUVM.CIS.ECU.EDU>
Subject: Re: greetings
In-Reply-To: Message of Mon, 27 Jun 1994 08:06:19 -0500 from

My response to the question of "what would you like in a soil survey digital
database"?

1. Digitized version of soil mapping units
2. Attribute file consisting of "typical pedon description" for each
mapped series, and local type location. Also taxonomy, and smu
inclusions.
3. Attribute file consisting of Soil Interpretations Record dat for each
mapped series.

Jonathan Phillips
Department of Geography & Planning
East Carolina University
Greenville, NC 27858-4353
gephilli@ecuvm1
919/757-6082


From Craul@agronomy.cas.psu.edu Mon Jun 27 03:42:00 1994
Date: Mon, 27 Jun 1994 10:42:00 -0700 (PDT)
From: "Craul, Timothy A." <Craul@agronomy.cas.psu.edu>
Subject: Recompilation accuracy
Message-Id: <2E0F110E@agronomy.cas.psu.edu>

Dear Josh:

I just signed on to this server and just read your question of Recompilation
Accuracy. I work in conjunction with the USDA Map Compilation Center located
at Penn State's Land Anaylsis Lab. We are using Orthophotos when we can get
them, and Mylar copies of the USGS Topo quads when we can't. The recompiling
is done with student help and double checked by our resident compilier. The
accuarcy does vary from person to person as well as different attempts for
the same person.

I did an error analysis for a class I was taking in trying to rubbersheet
direct trace from aeral photos of a moderately complex glaciated Allegheny
Plateau. The rubbersheeting was better the more points I used with an error
around 15-20 meters. I then checked a recompiled map on topo quad base and
the error was around 20 to 30 meters, within National Map Accuarcy Standards
for scales of maps greater than 1:20,000.

Try some rubbersheeting of direct trace and measure the distance differences
from a KNOWN point, as well as some recompiled maps.

The 6 meter standard as I understand it is the plotted or electronic map
must match the source map that is either scanned or digitized AFTER
RECOMPILATION with a 6 meter allowable error. I think that this criteria is
mostly for manually digitized maps.

Tim Craul
craul@agronomy.cas.psu.edu
Penn State
116 ASI Biulding
University Park, PA 16802

------------- Attached Message ----------------
> In response to your question on "How does one assess the accuracy
> of recompiled soil maps".
>
> Information on this is contained in the USDA-Soil
> Conservation Service National Soil Survey Handbook. Refere
> to 430-vi-NSSH, draft March 1994, part 647: Soil Geographic
> Data Development, Chapter 4 Map Compilation.
>
> This reference may be requested thru the Soil Survey section of
> any of the USDA-Soil Conservation State Offices nation wide.
>
> Dale J. Ceolla
> Asst. State Soil Scientist
> Des Moines, Iowa
>

Dale:

Thank you for responding to my question. I have a copy of the 1994 draft
of the National Soil Survey Handbook and I have read chapter 4 many times.
Either I have missed something or the answer to my question is not in there.

We are involved in the development of a digital soils database. We intend
that this database meet SSURGO standards. It is not clear to me what the
accuracy standards are. What is the maximum acceptable deviation in line
placement? And from what? SSURGO digitizing standards require that the
lines on the digital version not be more than 6 meters off of the source
document (the recompiled map). This is a precision standard for the
digitizing process. Is 6 meters also the accuracy standard for the
recompilation process?

We are experimenting with some different methods to recompile published
soil surveys to an acceptable base. The problem is this, depending
on the person recompiling, the base map, and the method used to recompile
the data, different maps result from the same source document. The
location of a soil line on two maps can differ by more than 30 meters. We
need to be able to assess the accuracy of these maps in order to chose the
most appropriate recompilation method. I may be asking for more than can be
expected, but right now I have less than I need.

Thanks

Josh Lear
NE Natural Resources Commission
P.O.# 94876
Lincoln, NE 68509-4876

E-mail: lear@nrcdec.nrc.state.ne.us



From Craul@agronomy.cas.psu.edu Mon Jun 27 05:00:00 1994
Date: Mon, 27 Jun 1994 12:00:00 -0700 (PDT)
From: "Craul, Timothy A." <Craul@agronomy.cas.psu.edu>
Subject: Digital Data
Message-Id: <2E0F22F5@agronomy.cas.psu.edu>

Dear Tim and Jon

I just got your ideas and let me fill you in on what we intend to do here in
Pennsylvania concerning Soil Survey Databases.

1. The digital data is available for the state in STATSGO and SURGO for a few
counties. Most of these counties are not certified yet. The ones (York,
Adams, Pike, Clinton, and Bucks) being worked on now will hopefully be
certified. I have seen the digital maps and they look good.

2. The data that will be included will be the standard material seen in
published surveys for now. We are considering ways to incorperate the new
NASIS database into this data. The NASIS database will allow incorporation
of local data to be used for local interpretaions as well as providing a
statewide database of actual field measurements and lab data from all
transects, pedon descriptions, sample pits etc. The Soils-5 data will be a
thing of the past. The standard USDA format that Tim asks about is
unknown at this time (we don't have one in PA). We in PA are trying to
offer different export formats on 135 meg tape (for now). We are also
playing with trying to provide published soil survey on CD-ROM in the future,
as soon as we get an optical writer and NHQ clears it. Right now we provide
DLG3, DXF, and ARC/INFO DLG format if requested. The MCC in PA aims to
please.

As far as locating the soil type locations on the published maps is still
nixed, but the NASIS database will have Lat-Long for field observations.

Jon Phillips asked about the descriptions in the database. If the soil survey
is available in digital format then everything that is in a published soil
survey will be there, including type location descriptions and map unit
descriptions, as well as digital color photos of soil profiles. The field
soil scientists see the possibilities and the needs of our "customers" and we
want to provide as much data as possiable to help everyone make good sound
land use decisions.

Tim Craul
USDA-SCS, PSU
craul@agronomy.cas.psu.edu

My frist questions is always what type of digital format is the
data? 1. Physical media -9track, floppies, CDROM, etc.
2. How is the data arcived on the media (formatt, record length, block size
etc.)
3. Organization of data on media.

This what I would like. That the SCS would use a DLG like format for
geometery, and instead of putting all attribute data at the tail end of a
record (this is what the USGS does) a mapping unit would be the only
attribute. The user then could use the mapping unit to link up all the
soils data.

What type of information would a person like in a digital soils data base?
I feel the more is beter, any and all data would be great.

One thing I would like to see where ever soil pits constructed that they
would be noted on the map.

Tim

\*---------------------------------------------------------------------------
| Loral ADS, 13810 SE Eastgate Way, Suite 500, Bellevue, WA 98005 |
| Phone: (206) 957-3211 FAX: (206) 746-1335 |
| T I M M I L L E R |
| tmiller@bvu-lads.loral.com |
--------------------------------------------------------------------------*\

1. Digitized version of soil mapping units
2. Attribute file consisting of "typical pedon description" for each
mapped series, and local type location. Also taxonomy, and smu
inclusions.
3. Attribute file consisting of Soil Interpretations Record dat for each
mapped series.

Jonathan Phillips
Department of Geography & Planning
East Carolina University
Greenville, NC 27858-4353
gephilli@ecuvm1
919/757-6082



From fcolozza@julian.uwo.ca Mon Jun 27 17:41:31 1994
Date: Mon, 27 Jun 1994 21:41:31 -0400 (EDT)
From: "f.c. colozza" <fcolozza@julian.uwo.ca>
Subject: AN INTRODUCTION
Message-Id: <Pine.3.88.9406272115.A14205-0100000@julian.uwo.ca>

Greetings to all participants of this list service! I have been a bit
tardy in introducing myself, but as the saying goes..better late than never.

I am a part-time M.Sc. graduate student at the University of Western
Ontario ("UWO") located in London, Ontario. I'm currently researching
the stable isotope hydrogeology of a nearby acid bog-fen. I have found
these landforms have posed more questions than answers. Subsequently, I
read these postings to see if anyone else out there is researching
similar bob-fens or wetlands in general. If so, please drop me a note.

The question I wish to ask is somewhat basic, but critical to the next
several months of my research:

How does one drill a borehole to collect soil cores and install
multi-level piezometers on a "floating spahgnum matt" consisting of
delicate and rare vegetation? I've come to terms that this is a manual
project and cannot include often used track-mounted drilling machines
(CME 45's etc.). Are there any novel ideas that should be considered?
The total depth will be approximately 40 feet (12 metres).

Thanks...

Frank C. Colozza
Department of Earth Sciences
The University of Western Ontario
London, Ontario.
<fcolozza@julian.uwo.ca>



From MartinB904@aol.com Mon Jun 27 23:42:14 1994
From: MartinB904@aol.com
Message-Id: <9406280342.tn108460@aol.com>
Date: Tue, 28 Jun 94 03:42:14 EDT
Subject: Re: greetings

What would I like in Digital Soil Survey Databases? Accurate depth to
groundwater and flow direction information.



From MartinB904@aol.com Mon Jun 27 23:50:21 1994
From: MartinB904@aol.com
Message-Id: <9406280350.tn108568@aol.com>
Date: Tue, 28 Jun 94 03:50:21 EDT
Subject: Re: AN INTRODUCTION

You might try the primitive way and hand-auger the boreholes that you need
and install PVC casings for piezometers. Properly sealing the boreholes may
be a problem that will need to be reserached. Of course, hand-augering the
boreholes assumes that the material that you are penetrating is fairly to
mederately loose.

Good Luck!



From lear@nrcdec.nrc.state.ne.us Tue Jun 28 02:36:30 1994
Date: Tue, 28 Jun 1994 07:36:30 -0500 (CDT)
From: Josh Lear <lear@nrcdec>
Subject: Re: Recompilation accuracy
In-Reply-To: <2E0F110E@agronomy.cas.psu.edu>
Message-Id: <Pine.3.07.9406280727.A6312-c100000@nrcdec>

Dear Tim:

You have raised several points to which I would like to respond.

On Mon, 27 Jun 1994, Craul, Timothy A. wrote:

> Dear Josh:
>
> I just signed on to this server and just read your question of Recompilation
> Accuracy. I work in conjunction with the USDA Map Compilation Center located
> at Penn State's Land Anaylsis Lab. We are using Orthophotos when we can get
> them, and Mylar copies of the USGS Topo quads when we can't. The recompiling
> is done with student help and double checked by our resident compilier. The
> accuarcy does vary from person to person as well as different attempts for
> the same person.

>
> I did an error analysis for a class I was taking in trying to rubbersheet
> direct trace from aeral photos of a moderately complex glaciated Allegheny
> Plateau. The rubbersheeting was better the more points I used with an error
> around 15-20 meters. I then checked a recompiled map on topo quad base and
> the error was around 20 to 30 meters, within National Map Accuarcy Standards
> for scales of maps greater than 1:20,000.

We have been working for about a year on a method of rubbersheeting
scanned atlas sheets to section corners digitized from USGS 7.5 minute
quads (mylar). The only way to estimate the accuracy is to determine the
adjustment at the links since they are the only features that the control
coverage and the slave have in common. The average adjustment on the
atlas sheets for Lancaster county in Nebraska is 12 meters.

In the first paragraph, you mentioned the variability in the maps produced
by recompilers. This is something I have observed also. Hand recompiled
maps can vary as much as 40 meters. The rubbersheeted maps vary very
little as they are processed by the computer. Question: At what point
does accuracy become a secondary issue to variability?
>
> Try some rubbersheeting of direct trace and measure the distance differences
> from a KNOWN point, as well as some recompiled maps.
>
> The 6 meter standard as I understand it is the plotted or electronic map
> must match the source map that is either scanned or digitized AFTER
> RECOMPILATION with a 6 meter allowable error. I think that this criteria is
> mostly for manually digitized maps.

There is a 6 meter standard as you describe for digitization. This is a
PRECISION standard only. It is a measure of the precision with which the
digitizing process has recreated the source document. It has nothing to
do with accuracy. The Proposed United States National Cartographic
Standards for Spatial Accuracy (in the National Soil Survey Handbook,
draft 1994) requres a horizontal ACCURACY of 12 meters (Class II) at
1:24000 scale. Question: How do you assess the accuracy of the
recompiled document? If it is necessary to recompile a map, then a more
accurate map does not exist to compare the recompiled map to.

Nebraska SCS has discouraged our pursuit of the rubbersheeting approach
because of the effects of rubbersheeting on the accuracy of the line
placement. Question: If the SCS cannot assess the accuracy of manual
recompilation or rubbersheeting, how can SCS promote one method over
another on the basis of accuracy?

Josh Lear
Nebraska Natural Resources Commission
301 Centennial Mall South
Lincoln, NE 68509-4876
e-mail lear@nrcdec.nrc.state.ne.us



From cs000rmh@selway.umt.edu Tue Jun 28 03:23:31 1994
Date: Tue, 28 Jun 1994 09:23:31 -0600
From: cs000rmh@selway.umt.edu (Ralph M Hirst)
Message-Id: <9406281523.AA04175@selway.umt.edu>

unsubscribe


From gcouger@olesun.agen.okstate.edu Tue Jun 28 08:11:36 1994
Date: Tue, 28 Jun 94 13:11:36 CDT
From: gcouger@olesun.agen.okstate.edu (Gordon Couger)
Message-Id: <9406281811.AA26778@olesun.agen.okstate.edu>
Subject: Re: AN INTRODUCTION

You might want to look into the old cable method of drilling. Insted
of a bit you could use a cylinder an pull up cores. In unconsolidated
material you might have to start out with a pretty big hole and case
the hole as you go. The equipment can be as simple as a bent pole and
and a rope above ground and bit and slush bucket below ground. Powered
versions are eaiser to use of course.

Good luck
Gordon


From dickr@utxvm.cc.utexas.edu Tue Jun 28 09:38:50 1994
Date: Tue, 28 Jun 1994 14:38:50 -0500
Message-Id: <199406281938.OAA03633@mail.utexas.edu>
From: dickr@utxvm.cc.utexas.edu (Dick Richardson)
Subject: Accuracy of topos and rubber sheeting images

Several interesting postings have been on the list, and I'd like to add
both an example of need for accuracy, as well as mention an application --

I'm using high resolution spatial and spectral aerographic photography to
monitor range conditions and rapid changes in biomass, soil cover. I'm
considering putting a large number (100 or more) reflectors on the ground,
each visible in the images and each located with DGPS. This will give me
accurate reference points for rubbersheeting, hopefully well under one
meter. The total area covered for these reference points would be
approximately one square mile, on relatively flat terrain.

Questions:
1. Has anyone worked with this kind of resolution and could help me avoid
re-inventing the wheel -- I'd like to discuss details
2. What are some plans and current activities to use GPS data, especially
DGPS, to improve the accuracy of topos as well as aerographic stereopairs
for slope analysis of approximately 1% resolution
3. If we have ground travel (walking) data from DGPS to map soils,
vegetation, or other features, how is it best compiled to be useful for
others to incorporate into their GIS system -- I'm using Delta Data's AGIS
software -- if they are interested in our study area.
4. I'm interested in getting selected local data for developing GIS
capabilities at the secondary school level, tuned to the locations of the
schools. This is intended to be an entry point for environmental science
classes where the students personally are knowledgeable about the areas in
their data base. Has anyone tried something like this, and had the
"pleasure" of locating such information to include biological (diversity?),
land use, soil, microclimatological, etc. data?

=========================================================================
R. H. (Dick) Richardson * (512) 471-4128 (w)
Zoology Department * (512) 471-9651 (FAX)
University of Texas * (512) 476-5131 (h)
Austin, TX 78712 * d.richardson@mail.utexas.edu



From cs000rmh@selway.umt.edu Tue Jun 28 12:27:36 1994
Date: Tue, 28 Jun 1994 18:27:36 -0600
From: cs000rmh@selway.umt.edu (Ralph M Hirst)
Message-Id: <9406290027.AA29824@selway.umt.edu>

unsub soils-l


From Craul@agronomy.cas.psu.edu Wed Jun 29 00:30:00 1994
Date: Wed, 29 Jun 1994 07:30:00 -0700 (PDT)
From: "Craul, Timothy A." <Craul@agronomy.cas.psu.edu>
Subject: Soil water table, flow
Message-Id: <2E1186D5@agronomy.cas.psu.edu>

From: MartinB904@aol.com
To: Multiple recipients of list <soils-l@unl.edu>
Subject: Re: greetings
------------------------------------------------------------------------------
What would I like in Digital Soil Survey Databases? Accurate depth to
groundwater and flow direction information.

The Digital Soil Survey Database in the future with the advent of NASIS is
supposed to have real measurements incorperated into the database. Depth to
high watertable will be in the NASIS database if watertable measurements were
taken in that county, otherwise watertable measurements for type locations
throughout the state will be included. Of course the varriability of water
table is very complex and the NCSS does not have the manpower or time to get
a large enough sample to withstand the rigors of detailed statistics on small
watersheds.

The flow direction of groundwater we can only guess at without detailed
measurements. It might be possiable in the future, but not in the near
future.

Tim Craul
USDA-SCS, PSU
craul@agronomy.cas.psu.edu



From kenlyn@uxa.cso.uiuc.edu Wed Jun 29 10:24:19 1994
From: clark kenlyn n <kenlyn@uxa.cso.uiuc.edu>
Message-Id: <199406292024.AA02129@uxa.cso.uiuc.edu>
Subject: tardy intro
Date: Wed, 29 Jun 1994 15:24:19 -0500 (CDT)

I've been a passive part of this group for a month or so, but recent
sign-ons by a Canadian or two has given me hope that my personal burning
soil-related question might be answered. I'm Kenlyn Clark, just finishing
my masters in soil fertility at the University of Illinois. My PhD interest
is in bioremediation. My question is what is "muskeg" (I suspect it's an
organic soil, but I'd like a scientific description of its properties), and
where can I find it? I'm going to be travelling through Canada in early
August with the Jasper/Banff area as my destination. I saw it mentioned in
a book about the geology and history of the Rockies. It was one of the many
pitfalls from Edmonton, AB, the supposed "Gateway to the Klondyke", to the
gold fields. My e-mail address is kenlyn@uxa.cso.uiuc.edu

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