HDTenEightyP/NetNews huggingface dataset:
From: makrisna@convex1.tcs.tulane.edu (Krishna Achuta Rao)
Subject: Need help on visualization hardware & software
Organization: Tulane University, New Orleans, LA
Date: Fri, 21 Aug 1992 23:59:22 GMT
Nntp-Posting-Host-[nntpd-2770]: convex1.tcs.tulane.edu

Hi there!


I am in the process of selecting hardware and software for use in visualization
of geophysical data (climate data from various sources including satellite, GED
COADS, GCM output etc). I would like to hear from people who have used various 
systems. My specific questions are:

     1. What hardware do you use? PC/mac/mainframe/workstation and as many
        specs. as you consider important.
     2. What software do you use? (eg. NCAR graphics) What Operating system
        does it run on? Is it public domain/free? If it is commercial software
        how much does it cost (ballpark figure will do)?
     3. What are your comments on the software you use? What do you feel are
        the strong/weak points of what you use?

I have access to PC's (386 with SVGA), IBM RS6000 (RISC), IBM 3081 (mainframe
with CMS o.s that has NCAR graphics ver. 3.1 and SAS), Convex C120 (unix o.s) 
and they are(can) all (be) connected. So any suggestions on how to utilize 
existing systems will be extremely helpful. Also, any comments on how I can
incorporate a CD ROM into this picture will be useful.

IMPORTANT NOTE: I am a grad student with oh maybe, a couple of thousand 
dollars I could get my advisor to fork out.

Please post or e-mail to makrisna@convex1.tcs.tulane.edu

I will post a summary if there is sufficient interest.

Thanks in advance.
krishna

--
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ Krishna Achuta Rao, Graduate Student, Mechanical Engg., Tulane University  +
+That's the whole problem with science. You've got a bunch of empiricists    +
+trying to describe things of unimaginable wonder.  -Calvin & Hobbes         +
Newsgroups: sci.geo.fluids
From: rcarter@gaudi.nas.nasa.gov (Russell L. Carter)
Subject: Modeling San Francisco Bay
Organization: NAS, NASA Ames Research Center, Moffett Field, CA
Date: Mon, 17 Aug 92 17:26:21 GMT

I'm looking for published research which deals with numerical simulations of
hydrodynamical models of San Francisco Bay.  I have references to a number
of papers by Ralph Cheng and Co. at the USGS in Menlo Park; are there
any others?

Thanks,
Russell
Newsgroups: sci.geo.fluids
From: rfedkiw@crenshaw.math.ucla.edu (Ronald Fedkiw)
Subject: Axisymmetric Navier Stokes Equations
Organization: UCLA Mathematics Department
Distribution: usa
Date: Sun, 16 Aug 92 21:26:12 GMT

I'm trying to do a calculation of the full compressible Navier Stokes
equations for flow past an axisymmetric blunt body.
So, I put the equations into axisymmetric form and multiply
through by 1/Jacobian = r = distance from centerline (of axisymmetry).
I need to do this to put the equations back into conservative form for 
my method.
The obvious problem is that the equations are no longer valid along
the axis of symmetry (where r = 0). The Jacobian here is infinite.
I'm not quite sure what the implications of an infinite Jacobian are,
but from looking at my equations it becomes obvious that they cannot 
be used to solve the flowfield at r=0.

I was wondering what sorts of methods ae in common practice to solve
for the flowfield near r=0.
The solution is important here since this is where the flow passes
through the strongest portion of the shockwave. (It's a normal shock
at r=0 and the heating is high, also this is the where the stagnation
streamline lies.)
So, I need a good method, this might be the most important part of the flow!

Any help is greatly appreciated.

(I've thought about bounding the domain of the grid away from r=0,
 by 1/2 of a grid cell, but what boundry condition would I use?)

Ron Fedkiw

--
Ron Fedkiw (rfedkiw@redwood.math.ucla.edu)

A plan is made by someone who is sitting and thinking ...
while others are doing.
Newsgroups: sci.geo.geology
From: shaw@s119.es.llnl.gov (Henry Shaw 510 423-4645)
Newsgroups: sci.geo.geology
Subject: Re: Worlds Largest Crater?
Date: 21 Aug 92 20:41:57 GMT
Organization: Earth_Sciences_Dept.,_LLNL

In article <1992Aug18.031958.20117@uniwa.uwa.edu.au>, gunter@tartarus.uwa.edu.au (Gunter Ahrendt) writes:
|> Could someone tell me which is the worlds largest crater, i've heard of
|> various:
|> 
|> Nastapoka Islands Crater, Hudson Bay, Canada. 442.5km Dia.
|> River Popigai Crater, Russia. 95km Dia.
|> Vredefort Ring Crater, South Africa. 41.8km Dia.
|> Deep Bay Crater, Saskatchewan, Canada. 13.7km Dia.
|> Barringer Crater, Arizona, USA. 1.3km Dia.
|> 
|> also Wolfe Creek Crater, Western Australia (if someones knows it's size please
|> reply!)
|> 
|> Any info?

This is a list of the craterform structures > 40km in diameter that are associated with 
known shock metamorphic features (Name, location, diameter, age):

Sudbury,  Ontario, Canada, 140km, ~1840Ma
Vredefort, S. Africa, 140km, ~1970Ma
Popigai, Siberia Russia, 100km, ~40Ma
Puchezh-Katunki, Russia, 80km, ~183Ma
Manicouagan, Quebec, Canada, 70km, ~210Ma
Kara, Russia, 50km, ~57Ma
Slijan, Sweden, 52km, ~365Ma
Charlevoix, Quebec, Canada, 46km, ~360Ma
Araguainha Dome, Brazil, 40km, <250Ma

Plus the recently discovered, putative impact site for the KT impactor in the Yucatan, which
is inferred to be in excess of 100km in diameter (but now buried).


see Grieve, RAF, 1982, The geologic record of impacts, in _Geologic Implications of
Large Asteroids and Comets on the Earth_, GSA Spec. Paper 190, LT Silver and PH Schultz, eds.,
pp 25-37.

-- 
Henry Shaw, Earth Sciences Dept., LLNL |    All opinions are my own.
Internet: shaw4@llnl.gov               |  
CIS: 76347,2523                        |
Fidonet: Henry Shaw at 1:161/55        |
Newsgroups: sci.geo.geology
From: Clifton M. Posey <dedcmp@arco.com>
Subject: Mt. Spurr ash available
Organization: ARCO Alaska, Inc.
X-Useragent: Nuntius v1.1a2
Date: Thu, 20 Aug 1992 15:17:32 GMT

Well, Mt. Spurr erupted yesterday leaving its beauty all over the fine
city of Anchorage. I am willing to provide ash sample for the cost of
shipping to anyone doing research on a related subject. Just send an
abstract of your work, your address and phone number and the amount of
ash needed. I'll call you to let you know of the cost. This offer expires
on the first good rain.
Newsgroups: sci.geo.geology,sci.geo.meteorology,rec.gardens
From: pharvey@mipos3.intel.com (Paul Harvey)
Subject: Re: Plant adaptation to thin ozone layer
Organization: Intel Corporation, Santa Clara, CA USA
	<1992Aug17.131506.6087@iscsvax.uni.edu>
Date: Mon, 17 Aug 1992 22:49:01 GMT

In article <1992Aug17.131506.6087@iscsvax.uni.edu> 
klier@iscsvax.uni.edu writes:
>Oxygen is a terrible, nasty, poisonous gas, and organisms need special
>defenses in dealing with this reactive nightmare. 

That is why plants evolved animals, right? To serve as oxygen sinks, other
than that we serve little useful purpose. Or can we help plants in other ways?

Newsgroups: sci.geo.geology
From: Clifton M. Posey <dedcmp@arco.com>
Subject: Mt. Spurr Eruption
Organization: ARCO Alaska, Inc.
X-Useragent: Nuntius v1.1a2
Date: Thu, 20 Aug 1992 15:12:20 GMT
From: jjh00@outs.ccc.amdahl.com (Joel J. Hanes)
Newsgroups: sci.geo.geology
Subject: Re: Worlds Largest Crater?
Date: 22 Aug 92 14:25:06 GMT
Reply-To: jjh00@OUTS.ccc.amdahl.com (Joel J. Hanes)
Organization: Amdahl Corporation, Sunnyvale CA

In article <134105@lll-winken.LLNL.GOV> shaw@s119.es.llnl.gov (Henry Shaw 510 423-4645) writes:
>
>This is a list of the craterform structures > 40km in diameter that are associated with 
>known shock metamorphic features (Name, location, diameter, age):
>
>Sudbury,  Ontario, Canada, 140km, ~1840Ma
>Vredefort, S. Africa, 140km, ~1970Ma
>Popigai, Siberia Russia, 100km, ~40Ma
>Puchezh-Katunki, Russia, 80km, ~183Ma
>Manicouagan, Quebec, Canada, 70km, ~210Ma
>Kara, Russia, 50km, ~57Ma
>Slijan, Sweden, 52km, ~365Ma
>Charlevoix, Quebec, Canada, 46km, ~360Ma
>Araguainha Dome, Brazil, 40km, <250Ma
>
>Plus the recently discovered, putative impact site for the KT impactor in the Yucatan, which
>is inferred to be in excess of 100km in diameter (but now buried).
>
>see Grieve, RAF, 1982, The geologic record of impacts, in _Geologic Implications of
>Large Asteroids and Comets on the Earth_, GSA Spec. Paper 190, LT Silver and PH Schultz, eds.,
>pp 25-37.

You may also be interested in the Manson Disturbance,
near Manson, Iowa, USA.  Something punched through
thousands of feet of Paleozoic deposits to the crystalline
basement rock; the event may have ocurred near the KT
boundary.  Measurement of the impact structure is
problematic, since it's buried under Pleistocene
glacial till.

---
Joel Hanes
Xref: sparky sci.geo.geology:1799 sci.geo.meteorology:2800 rec.gardens:6080
From: gpetty@rain.atms.purdue.edu (Grant W. Petty)
Newsgroups: sci.geo.geology,sci.geo.meteorology,rec.gardens
Subject: Re: Plant adaptation to thin ozone layer
Date: 19 Aug 92 22:07:21 GMT
Followup-To: sci.geo.geology
Organization: Earth & Atmospheric Sciences, Purdue University

In article <Bt5Gpq.39K@nntp-sc.Intel.COM> pharvey@mipos3.intel.com (Paul Harvey) writes:
>In article <1992Aug17.131506.6087@iscsvax.uni.edu> 
>klier@iscsvax.uni.edu writes:
>>Oxygen is a terrible, nasty, poisonous gas, and organisms need special
>>defenses in dealing with this reactive nightmare. 
>
>That is why plants evolved animals, right? To serve as oxygen sinks, other
>than that we serve little useful purpose. Or can we help plants in other ways?

We keep them supplied with fertilizer too.
-- 
Grant W. Petty                                gpetty@rain.atms.purdue.edu
Assistant Prof. of Atmospheric Science        (317) 494-2544
Dept. of Earth & Atmospheric Sciences     "All standard disclaimers apply"
Purdue University, West Lafayette IN  47907-1397  
Newsgroups: sci.geo.geology,ca.earthquakes
From: mlevins@metz.une.edu.au (Martin Levins)
Newsgroups: sci.geo.geology
Subject: Plate Tectonics Mac Program?
Keywords: Tectonics, geology, drift
Date: 17 Aug 92 01:20:48 GMT

Is there anyone who can help a student at our school with
the following problem:

To anyone out there,

I'm currently looking for a program that will aid me with plate tectonics and 
continental drift. The type of program I would like is one that will plot and 
animate a continent's drift path over time. I don't mind if locations have to 
be inputted manually. If this is too much to ask, even a mere animation program 
would suffice (preferably colour). If anyone can help in anyway, I would much 
appreciate it.

Please reply directly to me and not to this newsgroup.




Martin Levins                               Internet: mlevins@metz.une.edu.au
Director of Computing                                     Applelink: AUST0479
The Armidale School                                      Phone: +61.67.738219
Australia                                                  Fax: +61.67.738230
Newsgroups: sci.geo.geology
From: gunter@tartarus.uwa.edu.au (Gunter Ahrendt)
Subject: Worlds Largest Crater?
Organization: University of Western Australia
Date: Tue, 18 Aug 1992 03:19:58 GMT

Could someone tell me which is the worlds largest crater, i've heard of
various:

Nastapoka Islands Crater, Hudson Bay, Canada. 442.5km Dia.
River Popigai Crater, Russia. 95km Dia.
Vredefort Ring Crater, South Africa. 41.8km Dia.
Deep Bay Crater, Saskatchewan, Canada. 13.7km Dia.
Barringer Crater, Arizona, USA. 1.3km Dia.

also Wolfe Creek Crater, Western Australia (if someones knows it's size please
reply!)

Any info?
From: cowen@jade.ucdavis.edu
Newsgroups: sci.geo.geology
Subject: Largest craters
Date: 18 Aug 92 18:49:59 GMT
Reply-To: cowen@jade.ucdavis.edu
Organization: Geology Department, University of California, Davis

I believe that the alleged Hudson's Bay crater is not. Although the shoreline
happens to have an almost perfect arc-like shape, the rocks are not disturbed
as one would expect for an impact.
The largest crater thus becomes the Chicxulub structure in the Yucatan
region of Mexico, though it is covered by later sediments. However, there
are ring-shaped structures in the bedrock, leading to estimates around
180 km. for the diameter. Drill holes have encountered 1000 meters of 
igneous rock, compatible with melting the local rocks. There are tektites
(frozen droplets of molten rock cooled by rapid transit in ballistic
trajectories through the air) in rocks of the same age in Haiti and other
Caribbean localities. There are quartz fragments spread for hundreds of
kilometers round about that have been "shocked" to produce characteristic
lamellar structures, only found associated with known impacts. Seafloor
sediments of the same age show signs of massive disturbance (from an
impact tsunami?). AND the age of the Chicxulub crater and all these other
phenomena is EXACTLY (within normal geological error) at the end of the
Cretaceous, when the dinosaurs, ichthyosaurs, plesiosaurs, mosasaurs, and
pterosas go extinct. Cause and effect? A definite maybe (considering that
mammals, birds, amphibians, turtles, crocodiles survived).
Richard Cowen
Newsgroups: sci.geo.geology,ca.earthquakes
From: dwv@magic.ucsb.edu (Dave Valentine;GS 2012;3471)
Newsgroups: sci.geo.geology
Subject: Address for R.W. Allmendinger
Keywords: Steronet, Allmendinger, address
Date: 19 Aug 92 18:37:57 GMT
Article-I.D.: magic.dwv.714249477

Netters, 
One of my fellow grad students was looking for the manual to the stereonet program by R.W. Almendinger.  Does anybody have an address for Dr. Allmendinger?
Does anybody know what the latest version of the program is?

Forward a duplicate by e-mail since our news server is being flakey lately.
thanks in advance,
David Valentine
dwv@magic.ucsb.edu
Newsgroups: sci.geo.geology
From: HARALD.STEHLIK@OFFICE.WANG.COM ("Harald Stehlik")
Subject: Mines in Massachusettes
Organization: Mail to News Gateway at Wang Labs
Date: 18 Aug 92 12:48:10 EST

Subject: Mines in Massachusettes
Does anybody know about Mines in Massachusettes, Maine, Conneticut
or mineralogical inetersting sites in these states ?
i'm visiting Massachusettes next month, so i would be very interested
to get infos.
Thank's in advance for any information.

Harald Stehlik / Vienna
Newsgroups: sci.geo.geology,ca.earthquakes
From: roelle@uars_mag.jhuapl.edu (Curtis Roelle)
Newsgroups: sci.geo.geology
Subject: Recent Mt. Pinatubo Eruption?
Keywords: volcano,"volcanic sunset"
Date: 13 Aug 92 21:00:10 GMT
Organization: Johns Hopkins University

Last year's eruption of Mt. Pinatubo produced some memorable sunsets last
summer and fall -- the best I had seen since El Chichon.  Even during
daylight, ripple-like "clouds" could be seen in the general direction of
the sun.  Naturally, these were most apparent in the west shortly after
sunset.

But recently (month ago or so) there were news stories circulating about
Pinatubo in eruption again.  I was wondering how does this eruption compare,
with respect to the material injected into the atmosphere, with last year's
eruption.  

About 3-4 weeks ago we had two consecutive sunsets whose colors bore the
pink and purple signature of a volcanic sunset.  Although this might have
been jsut a dense locally heavy concentration from last year's eruption,
I would like information about any recent Pinatubo activity.

Curt Roelle -- roelle@sigi.jhuapl.edu
Newsgroups: sci.geo.geology,sci.geo.meteorology,rec.gardens
From: pharvey@mipos3.intel.com (Paul Harvey)
Subject: Re: Plant adaptation to thin ozone layer
Organization: Intel Corporation, Santa Clara, CA USA
Date: Mon, 17 Aug 1992 19:06:49 GMT

In article <1992Aug17.041236.5106@math.ucla.edu> 
ramirez@julia.math.ucla.edu (Alice Ramirez) writes:
>My question is, how did plants cope with the higher level of UV radiation
>that must have bombarded them, how might it have affected their
>biological processes such as photosynthesis and respiration?  Is anyone
>studying this, or has anyone published anything on this?

Yeah, they are studying it down on the southern tip of South America, where
unfortunately for them, they get the full effects of our ozone hole. So we
will get to see the effects first hand, effects on plants animals and humans.
I don't have any references, sorry, but I remember reading that this is one
of the hot natural science things to occur in a long time. Ideally, we would
reverse the ozone hole, but this doesn't seem to be happening, so we'd
better do the next best thing, learn to live with it. Check out current
material on the hole, you should find stuff on research occuring in this
most southerly city.

Newsgroups: sci.geo.geology
From: joe@montebello.soest.hawaii.edu (Joe Dellinger)
Subject: Re: Worlds Largest Crater?
Reply-To: joe@montebello.soest.hawaii.edu
Organization: School of Ocean and Earth Science Technology
Date: Fri, 21 Aug 1992 09:37:55 GMT

In article <1992Aug19.045445.3613@frodo.cc.flinders.edu.au>, mgjmw@gaea.es.flinders.edu.au (Jon Whellams) writes:
|> Henby, about 120 Kms south-east of Alice Springs, has some twelve impact
|> craters resulting from the atmospheric breakup of a meteorite about 5000
|> years ago. These craters are fairly small (the largest some 200 metres
|> across and about 15 metres deep) but still it's an interesting place to
|> wander around.

	In a similar vein, as long as you aren't expecting too much
check out the nice little crater near Odessa Texas, right off the interstate.
(It's a county park.) Unfortunately scientific investigations of the 30's and
40's have disturbed it a fair bit. (But where else can you see an impact
crater with oil pumpers right next to it, pumping away?)

     /\    /\    /\/\/\/\/\/\/\.-.-.-.-.......___________
    /  \  /  \  /Hawaii Institute of Geophysics, Honolulu\/\/\.-.-....__
___/    \/    \/Joe Dellinger, Internet: joe@montebello.soest.hawaii.edu\/\.-.__
____________________________________________________
Objectivity is not an unobtainable emptying of mind |
but a willingness to abandon a set of preferences   |----> Stephen J. Gould
when the world seems to work in a contrary way.     |
From: roy_wells@qm.vitalink.com
Newsgroups: sci.geo.geology
Subject: Re: Mount St. Helens question (Thanks)
Date: 19 Aug 92 21:36:32 GMT
Reply-To: <roy_wells@qm.vitalink.com> (<roy_wells@qm.vitalink.com>)
Organization: Vitalink Communications Corporation

My thanks to all of you who responded so quickly to my query.

The dispute is resolved, although one of the contenders is still 
*certain* the eruption was on a weekend (it was on a Sunday).


----
"If you can't reach (age) 70 by a comfortable road, don't go."  --Mark Twain
Newsgroups: sci.geo.geology,sci.geo.meteorology,rec.gardens
From: ramirez@julia.math.ucla.edu (Alice Ramirez)
Subject: Plant adaptation to thin ozone layer
Organization: UCLA Mathematics Department
Date: Mon, 17 Aug 92 04:12:36 GMT

Awhile back I studied up on the natural history of ginkgo and, most probably
due to some essential weirdness, got carried away and started reading up
(not deeply, just 5-6 books) on the whole history of plant life
starting from cyanobacteria on up to when these things increased in complexity
enough to somehow make their way up onto dry land. And on and on.

According to what I read, this process began before enough free oxygen had
formed in the atmosphere to create the ozone layer.  That is, some ozone had
formed, but not to the thickness that we now (for the time being) have
blanketing our planet.

My question is, how did plants cope with the higher level of UV radiation
that must have bombarded them, how might it have affected their
biological processes such as photosynthesis and respiration?  Is anyone
studying this, or has anyone published anything on this?

Newsgroups: sci.geo.geology,sci.astro
From: HARALD.STEHLIK@OFFICE.WANG.COM ("Harald Stehlik")
Subject: Antarctic Meteorites
Organization: Mail to News Gateway at Wang Labs
Date: 18 Aug 92 12:48:00 EST

Subject: Antarctic Meteorites.
I'm looking for a contact to the Antarctic Meteorite Program.
Thank's in advance for any information.
Harald Stehlik / Vienna
Newsgroups: sci.geo.geology
From: joe@montebello.soest.hawaii.edu (Joe Dellinger)
Subject: Re: Plant adaptation to thin ozone layer
Reply-To: joe@montebello.soest.hawaii.edu
Organization: School of Ocean and Earth Science Technology
Date: Wed, 19 Aug 1992 07:43:21 GMT

In article <1992Aug17.041236.5106@math.ucla.edu>, ramirez@julia.math.ucla.edu (Alice Ramirez) writes:
|> My question is, how did plants cope with the higher level of UV radiation
|> that must have bombarded them, how might it have affected their
|> biological processes such as photosynthesis and respiration?  Is anyone
|> studying this, or has anyone published anything on this?

	A professor here, whose name I have forgotten, is studying the
reducing-oxygenating transition by looking for preserved ancient soil.
I attended a talk he gave last year. One point that he made, which I
found quite interesting, is that many of the "primitive" oxygen-shunning
life forms that survive today still have much more sophisticated _UV-repair
mechanisms_ than us oxygen-loving latecomers. The old bugs were adapted
to living in a world without an ozone layer, you see.

	On the other hand, us new bugs have all sorts of sophisticated repair
mechanisms and chemical defenses and strategies... to deal with that nasty
reactive O2 gas that's all around now.

     /\    /\    /\/\/\/\/\/\/\.-.-.-.-.......___________
    /  \  /  \  /Hawaii Institute of Geophysics, Honolulu\/\/\.-.-....__
___/    \/    \/Joe Dellinger, Internet: joe@montebello.soest.hawaii.edu\/\.-.__
____________________________________________________
Objectivity is not an unobtainable emptying of mind |
but a willingness to abandon a set of preferences   |----> Stephen J. Gould
when the world seems to work in a contrary way.     |
Newsgroups: sci.geo.geology
From: <roy_wells@qm.vitalink.com> (<roy_wells@qm.vitalink.com>)
Subject: Mount St. Helens question
Reply-To: <roy_wells@qm.vitalink.com> (<roy_wells@qm.vitalink.com>)
Organization: Vitalink Communications Corporation
Date: Wed, 19 Aug 1992 15:08:01 GMT

My apologies for any offended by my ignorance, but would someone please 
help me settle a dispute?

I am trying to learn the day and date of the big Mt. St. Helens eruption in 1980?

Email response appreciated.



----
"If you can't reach (age) 70 by a comfortable road, don't go."  --Mark Twain
Newsgroups: sci.geo.geology
From: davecole@cie.uoregon.edu (Dave Cole)
Subject: FAQ
Organization: University of Oregon Campus Information Exchange
Date: Mon, 17 Aug 92 02:04:26 GMT

Hello,
  Can someone post or tell me how to get the FAQ for Sci.Geo.Geology?
Dave

Newsgroups: sci.geo.geology
From: m23141@mwunix.mitre.org (Patrick Jones)
Subject: Fence diagram software ??
Keywords: fence 
Organization: The MITRE Corporation
Date: Mon, 17 Aug 1992 17:59:33 GMT

	I am trying to find good ibm PC software that will do nice fence
diagrams and profiles.  Does anyone have any suggestions?  I will post
a summary if I get enough responces.

						Thanx


						Patrick Jones
						plj@mitre.org
Newsgroups: sci.geo.geology