Authoritative Topos & GeoChange Maps

Report
INTRODUCING OUR AWARD WINING
Authoritative US Topos and GeoChange Maps
Developed by
The W. E. Upjohn Center for the Study of Geographical Change
Western Michigan University
and honored by
The International Map Industry Association (IMIA):
Best Digital Map Product - Gold Award:
Authoritative US Topo & GeoChange Maps
Overall Americas All-Category Winner:
Authoritative US Topo & GeoChange Maps
Presented at the IMIA (Americas) Map Conference
on September 10, 2013, held in Cambridge, Mass.
What are Authoritative US Topos
and
GeoChange Maps?
 Authoritative US Topos digital maps are produced from scans of the
entire database of US topographic maps.
 Digitized maps are geo-referenced and processed for color consistency.
 Authoritative US Topos are the basis of our GeoChange map product,
paired with recent NAIP aerial photography, and producing a stand
alone reference.
What makes our product unique?
 Authoritative US Topos and GeoChange maps are produced
using our unique digitization process designed to produce GIS
data from conventional maps.
 All quads (the same paper maps used in the production of
DRGs) are scanned in high resolution at 500 dpi then processed
to 250 dpi without losing digital quality.
 Our 1:24,000 scale digital topos line up impeccably with 1:12,000
scale imagery, largely due to USGS field surveying and quality
standards
What are some of the ways our
Authoritative Topos differ from USGS DRGs?
DRG
Authoritative Topo
Authoritative US Topos show sharp, clear definition of text and features.
What are some of the ways our
Authoritative Topos differ from USGS DRGs?
DRG
Authoritative Topo
Authoritative US Topos maintain clear and distinct contour line detail.
What are some of the ways our
Authoritative Topos differ from USGS DRGs?
Authoritative Topo
DRG
High resolution Authoritative
US Topos maintain distinction in
features. Here the individual
symbols for a vineyard are
clearly visible.
What are some of the ways our
Authoritative Topos differ from USGS DRGs?
DRG
Authoritative Topo
With Authoritative US Topos, features such as rivers,
Streams, and rapids are more clearly defined
What are some of the ways our
Authoritative Topos differ from USGS DRGs?
DRG
Authoritative Topo
Authoritative US Topos provide clear, consistent, and well defined contours.
What are some of the ways our
Authoritative Topos differ from USGS DRGs?
DRG
Authoritative
Authoritative Topo
US Topos
ensure
contour lines
remain
separate and
distinct and
are visible
across
borders.
What are some of the ways our
Authoritative Topos differ from USGS DRGs?
DRG
Authoritative Topo
Authoritative
US Topos
provide
consistent
color and
definition
with no
fading.
How do we produce our
GeoChange Maps?
Authoritative US Topos are paired with aerial photography to produce
GeoChange composites, which allow map features to be read over imagery.
What are the advantages of maps and
imagery together?
Tracing and Tracking Geographical Change
 Glacial Movement
 Land Cover Change
Authoritative Topo
 Urban Implosion
Aerial Photogaph
GeoChange
Glacial Movement-Glacier National Park
Ahern Pass, MT (48 45N, 113 45W)
Map date 1968, Aerial Photo date 2012
Contour Interval = 80 feet
Minor movement of glaciers in this region
What are the advantages of maps and
imagery together?
Tracing and Tracking Geographical Change
 Glacial Movement
 Land Cover Change
Authoritative Topo
 Urban Implosion
Aerial Photogaph
GeoChange
Land Cover Change -Upper Peninsula
Michigan Mining Country
Silver City, MI (46 45N, 89 30W)
Map date 1943, Aerial Photo date 2012
Contour Interval = 20 feet
Forest and upper crust removal
What are the advantages of maps and
imagery together?
Tracing and Tracking Geographical Change
 Glacial Movement
 Land Cover Change
 Urban Implosion
Authoritative Topo
Aerial Photogaph
GeoChange
Urban Implosion
Flint, MI (43N, 83W)
Map date 1967, Aerial Photo date 2010
Contour Interval = 5 feet
Would you like more information about
Authoritative US Topos and GeoChange
Maps for Mobile Devices?
View our product in detail at:
http://www.wmich.edu/ucgc/images/ID_AMERICAN_FALLS_1969-2013.tif
If our product is of interest to you,
would you be willing to take the short survey below?
Click HERE for Survey
Thank you for taking the time to review our Authoritative Topos and
GeoChange Digital Maps developed by the Western Michigan University
W. E. Upjohn Center for the Study of Geographical Change.
The W. E. Upjohn Center Staff

similar documents