Benthic Terrain Modeler - Dawn Wright

Benthic Terrain Modeler - Dawn Wright

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

Benthic Zones? Composite BPI + + Coarse BPI Rugosity (derived from

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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