Hello everyone,
Here is a quick recap of all the wonderful responses I received from the
GIS community, both in Alaska as well as in the lower 48.
Let me begin by offering a sincere thanks to all those who sent leads my
way, as well as some actual data! The GIS community never ceases to
amaze me. As many of you know (and informed me) the problem with
finding geologic data (as well as a multitude of other data sets) for
Alaska is that much of the state is still in the process of being
mapped. The list of responses below is a testament to this fact. Kudos
to all those noble mappers/scientists that are on the ground as I write
this mapping out Alaska's vast frontier.
The most useful response to my particular mapping needs came from Nora
B. Shew who is currently apart of a project that is creating digital
geologic data for Alaska. She led me to these two sites to download and
review her teams work in my area of interest (the Copper River):
The datasets are available on-line:
Wilson, Frederic H., Labay, Keith, A., Shew, Nora, B., Preller, Cindi
C., Mohadjer, Solmaz, Richter, Donald H., 2005, Preliminary integrated
geologic map databases for the United States: digital data for the
geology of Wrangell-Saint Elias National Park and Preserve, Alaska:
U.S. Geological Survey Open-File Report 2005-1342.
pubs.usgs.gov/of/2005/1342
Wilson, Frederic H., Dover, James H., Bradley, Dwight C., Weber,
Florence R., Bundtzen, Thomas K., Haeussler, Peter J., 1998, Geologic
map of central (interior) Alaska: U.S. Geological Survey Open-File
Report 98-133 (also available in paper and on cd)
wrgis.wr.usgs.gov/open-file/of98-133a
Thanks also to Lars Bromley who suggested using data from the ESRI
database called ArcAtlas: Our Earth, as well as looking to IRIS:
http://www.iris.edu/data/data.htm. Great leads, but not at the scale
that I required.
I also received some very helpful emails that led me to base maps that I
could use to digitize the layers. Thanks to Peter Haeussler (and AC
Brown for giving me his contact info), John Stroud, and Dan Rathert for
these leads:
Peter Haeussler:
As far as I know there is nothing "out" that is digital for active
faults. However, if you get this map, it is the most current published
active faults map for Alaska. It should be available in a good academic
library. It shouldn't take too long to digitize the active faults in the
area of interest.
TI: Title
Neotectonic map of Alaska
AU: Author
Plafker, George: Gilpin, L M: Lahr, J C
MT: Monograph Title
The geology of Alaska
ED: Editor
Plafker, George: Berg, Henry C
PB: Publisher
Geological Society of America, Boulder, CO, United States (USA)
PG: Pages
1 sheet
PY: Publication Year
1994
DE: Descriptors
Alaska: DNAG: maps: neotectonics: tectonic maps: tectonics: United
States
For bedrock faults, part of your area is in this publication, available
on the web:
http://wrgis.wr.usgs.gov/open-file/of98-133-a/
The remaining part is in press in a USGS publication. However, lucky for
you, the digital data is out at:
http://pubs.usgs.gov/of/2005/1342/
John Stroud:
Here are some maps that can be digitized or author's contacted for
datasets
http://geo-nsdi.er.usgs.gov/metadata/map-i/2494/metadata.faq.html
http://geopubs.wr.usgs.gov/open-file/of95-624/of95-624.pdf
Dan Rathert:
http://infotrek.er.usgs.gov/pubs/
http://wwwdggs.dnr.state.ak.us/
General Links:
http://agdc.usgs.gov/
http://www.asgdc.state.ak.us/
Finally Michael Flaxman suggested an interesting lead: FEMA's HAZUS
software and dataset (free by request). I requested this software and
dataset, but have not received it yet, and so I can not comment on
whether is covers Alaska or not.
Thanks again everyone!!!
Sincerely,
Analisa Noel Gunnell
Chief Cartographer/GIS Analyst
Ecotrust
721 NW Ninth Avenue, Suite 200
Portland, Oregon
97209
503.467.0750
analisa@ecotrust.org
www.ecotrust.org
www.inforain.org
www.tidepool.org
CONSERVATION ECONOMY
ECOLOGY-ECONOMY-EQUITY
Every animal knows more than you do.
- Nez Perce
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