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Subject: Satellite image maps of USA, Florida, land cover change map in Peru
Date: Sat, 26 Mar 2005 19:47:12 -0700
From: Joseph J Kerski <[log in to unmask]>
To: [log in to unmask]
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Folks:
I have posted images and text about 3 wonderful USGS maps on the Education
Map Catalog site, below.
You can purchase the following maps from the USGS or from USGS Business
Partners. The Partners can be found on:
http://rockyweb.cr.usgs.gov/acis-bin/querypartner.cgi
(1) On http://rockyweb.cr.usgs.gov/outreach/mapcatalog/image.html
Florida Satellite Image and Topographic Map - -Satellite image of the
entire state of Florida with matching topographic map on reverse side.
Excellent for examining the topography, human impact, and hydrography of
Florida. Map scale is 1:750,000. Map dimensions 42"x42.
Product ID Number 51534
(2) On http://rockyweb.cr.usgs.gov/outreach/mapcatalog/image.html
United States Satellite Image Map--Satellite image of the United States
with same image on reverse, but with 24 distinguished features outlined and
discussed. Use the map and the features to examine landforms, river
systems, reflectance, land use, and human impact on the landscape. Map
dimensions are 28"x19".
Product ID Number 101495
(3) On: http://rockyweb.cr.usgs.gov/outreach/mapcatalog/international.html
Results of Land Cover Change Detection Analysis in and around Cordillera
Azul National Park, Peru--The first product of the Optimizing Design and
Management of Protected Areas for Conservation Project is a land cover
change detection analysis based on Landsat thematic mapper (TM) and
enhanced thematic mapper plus (ETM+) imagery collected at intervals between
1989 and 2002. The goal of this analysis was to quantify and analyze
patterns of forest clearing, land conversion, and other disturbances in and
around the Cordillera Azul National Park in Peru. After removing clouds
and cloud shadows from the imagery using a series of automatic and manual
processes, a Tasseled Cap Transformation was used to detect pixels of high
reflectance, which were classified as bare ground and areas of likely
forest clearing. Results showed a slow but steady increase in cleared
ground prior to 1999 and a rapid and increasing conversion rate after that
time. The highest concentrations of clearings have spread upward from the
western border of the study area on the Huallaga River. To date, most
disturbances have taken place in the buffer zone around the park, not
within it, but the data show dense clearings occurring closer to the park
border each year. Five dates of Landsat TM data were used to determine the
locations of forest disturbance. The accompanying map sheets plot the
results of the disturbance mapping on a shaded relief image depicting the
terrain of the region. Additional data layers have been added including
transportation, hydrography, and boundaries. Sheet 2-5 are dedicated to
showing a single-year worth of disturbances while sheet 1 displays the
aggregated results of all years.
See http://pubs.usgs.gov/sim/2005/2879/ for more information.
Authors: Benjamin Sleeter and David Halsing. 2005
U.S. Geological Survey Scientific Investigations Map 2879, scale 1:380,000,
6 sheets. Digital only.
Joseph Kerski
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Joseph J. Kerski, Ph.D.
Geographer: Education/GIS
US Geological Survey
Building 810 - Entrance W-5 - Room 3000
Box 25046 - MS 507
Denver CO 80225-0046 USA
[log in to unmask]
Voice 303-202-4315
Fax 303-202-4137
http://rockyweb.cr.usgs.gov/public/outreach/
USGS: Science for a Changing World
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