Upload
others
View
3
Download
0
Embed Size (px)
Citation preview
TerraLookIncreased Access to Satellite Images
Woody Turner
July 10, 2007
OAS
What Is TerraLook?
1. Tool to order images2. Images3. Software
Coco RiverNicaragua
*
Software Capabilities☯ Image display, roam, zoom☯ Change analysis tools☯ Measure☯ Overlay display, create, edit☯ Image annotation☯ GPS point ingest☯ Image enhancement☯ Image mosaicking☯ 3-D viewing (prelim)☯ Advanced capabilities☯ Multilingual
Case Study 1☯ Dong Hua Sao Reserved Forest, Laos
• Essentially a National Park☯ Encroachment by agriculture
• Extent not known in 1999• Very difficult to assess on the
ground ☯ Park managers had little experience
with remote sensing☯ Purchased IKONOS images in
February 2000 (very expensive!)• TerraLook not available then
Southern Lao PDR
AOI: On Bolovens Plateau
1973 1989
20042000
2004Zoom
Park Manager Assessment☯ “For the first time, we have current
and complete information on the status of forest clearing in the two critical areas of the uplands.”
☯ “This knowledge now enables us to suggest boundary adjustments and alternatives for dealing with the problem.”
Recommendation
2 km0 1
Case Study 2☯ Kaziranga National Park, Assam, India☯ Adjacent to Brahmaputra River
• Very seasonal• Extreme sediment load• Home to endangered one-horned
Asian rhinoceros, tigers, elephants etc
☯ Park essentially built on a sand bar☯ Susceptible to erosion
Future☯ Huge hydropower potential will be
tapped☯ Will impact river flow and sediment
load• Can have huge impact on park
☯ Need to communicate park vulnerability to Assam Minister of Power
Kaziranga National Park
Kaziranga National Park
Kaziranga National Park
1973
2001
True Story☯ These differences
were discovered in real time during a presentation to the park managers
☯ They knew the river bank moved over time
☯ They did not know how much
Comparison
3 km
Tell the Story
RemovalAccretion
3 km
Both Case Studies☯ Managers were aware of the problem☯ Could not assess extent☯ Images allowed quantification and
documentation (and communication)
TerraLook and Monitoring☯ Can TerraLook be used for
monitoring?☯ Example: The Monitoring Loop
1. Order existing image set from TerraLook
2. Request periodic new ASTER acquisitions (free)
3. Order newly acquired scenes from TerraLook (free)
4. Add to collection
http://terralook.cr.usgs.gov