-------- Original Message --------
Subject:        Fw: Under The Golden Gate Bridge - New USGS Image Map
Date:   Thu, 8 Jun 2006 08:41:43 -0600
From:   Joseph J Kerski <[log in to unmask]>
To:     [log in to unmask]




*Folks:*

*We have a wonderful new USGS map in stock that might be a valuable
addition to your investigations about plate tectonics, coastal and bay
processes, human-environment interaction, and the application of
geotechnologies to study the Earth.*

*Under the Golden Gate Bridge*

*Views of the Sea Floor Near the Entrance to San Francisco Bay, California*
*Scientific Investigations Map 2917*

This poster (33.5” x 32.5”) shows views of the sea floor in west-central
San Francisco Bay around Alcatraz and Angel Islands, underneath the
Golden Gate Bridge, and through its entrance from the Pacific Ocean. The
sea floor is portrayed as a shaded relief surface generated from the
multibeam data color-coded for depth from light blues for the shallowest
values to purples for the deepest. The land regions are portrayed by
USGS digital orthophotographs (DOQs) overlaid on USGS digital elevation
models (DEMs). The water depths have 4x vertical exaggeration while the
land areas have a 2x vertical exaggeration.

Product ID # 206228

Price $ 7

I have added this map to the "image" section of the Education Map
Catalog, on:

http://education.usgs.gov/common/resources/mapcatalog/image.html

Joseph Kerski
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Joseph J. Kerski, Ph.D.
Geographer
US Geological Survey
Building 810 - Entrance W-5 - Room 3000
Box 25046 - MS 507
Denver CO 80225-0046 USA_
[log in to unmask] <mailto:[log in to unmask]>
Voice 303-202-4315
Fax 303-202-4137_
__http://education.usgs.gov_ <http://education.usgs.gov/>*
NEW BOOK*: _Essentials of the Environment _
<http://www.us.oup.com/us/catalog/general/subject/Geography/Physical/?view=usa&ci=9780340816325>
_
__USGS: Science for a Changing World_ <http://www.usgs.gov/>
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