The Benthic Terrain Modeler for Terrain Classification and Visualization of American Samoa Multibeam Data Dept. of Geosciences Oregon State University Ron Rinehart Dr. Dawn Wright Emily Lundblad Emily Larkin NOAA - Coastal Services Center
Josh Murphy Lori Cary-Kothera What is the BTM? BTM = Benthic Terrain Modeler Standalone program compatible with ArcGIS 8.x Converts bathymetry into a user defined classification system
Combination of spatial analysis 2 Key Questions about the BTM Tool? What is it? How does one use the BTM tool? What are the key features? What are the computer system requirements?
Why is this tool needed? Who will use it? Where will this tool be used? Is it a useful tool? 3 Which Spatial Analysis Algorithms? Slope Multi-Scale Bathymetric Position Index
Rugosity 4 athymetric Position Index How it Work Hilltop Middle Valley Coarse BPI
Ridge Crest Fine BPI Stream Channel 5 Bathymetric Position Index Sloped Surface
Composite BPI Slope Stream Valley on a Sloping Hillside 6 Rugosity
7 How does it work? Step One Step Two Slope Bathymetry
+ Fine BPI Step Four Step Three Biodiversity Enhanced
8 How does one use the BTM tool? 9 How does one use the BTM tool? 10
BTM Key Features?
Wizard Interface Learn More Buttons Re-use intermediate results Re-sampler built in to save time Classification Dictionary Dictionary files are XML Skip the Wizard Go Straight to the Desired Process 11
Computer System Requirements? ArcGIS 8.x with Spatial Analyst Fast processor >2.0 Ghz recommended Up to a gigabyte of hard drive space Rasters need to be ESRI GRID format :: These are guidelines. As
raster size increases so does 12 Why is this tool needed? es Courtesy of NOAA Wave of the Future Calendar 13
Who will use the BTM? User Fagatele Bay National Marine Sanctuary American Samoa Department of Marine and Wildlife Resources American Samoa
Community College Oregon State Purpose Management Management Education 14
Example from Vatia Bay 15 16 Bathymetry of Vatia Bay 17
18 BPI of Vatia Bay Coarse BPI Fine BPI 19
Benthic Terrain Classes of Vatia Bay 20 21 Profile Analysis Shel f
Forere ef Reef Cres t Reef Cres
t Forere ef Shel f 22 Image Courtesy of NOAA Biogeography
Benthic Terrain of Vatia Bay 23 Rugosity of Vatia Bay 24 Rugosity of Vatia Bay
25 Is it Useful? Data need to be ground-truthed Mission scheduled for 2005 Potential for including Aspect Potential for Backscatter 26
When and where will it be available? When: October 2004 Where: http://dusk.geo.orst.edu/djl/ samoa 27 Thanks & Acknowledgements
NOAA Coastal Services Center Integration and Development Initiative, Grant #NA03NOS4730014 Oregon State University McNair Scholars Program Programming Team from NOAA CSC Jeff Jenness & Andy Weiss 28
When and where will it be available? When: October 2004 Where: http://dusk.geo.orst.edu/djl/ samoa 29
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