TerraLook Increased Access to Satellite Images Woody Turner July 10, 2007 OAS
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