aag - april 8th 2005

AAG - April 8th 2005

3-D BENTHIC TERRAIN MAPPING AND MODELING IN AMERICAN SAMOA

Ronald W RinehartOregon State Universityrineharr@onid.orst.edu

Dr. Dawn WrightOregon State Universitydusk@dusk.geo.orst.edu

Emily LundbladJoint Inst. for Marine and Atmospheric Research, Coral Reef Ecosystem Div., NOAA Fisheries, Univ. of Hawaii ManoaEmily.Lundblad@noaa.gov

Emily LarkinKnauss Marine FellowEmily.larkin@gmail.com

Joshua MurphyNOAA Coastal Services CenterJoshua.Murphy@noaa.gov

Lori Cary-KotheraNOAA Coastal Services CenterLori.Cary-Kothera@noaa.gov

Objectives

• Improve bathymetric mapping with GIS

• Generate a classified benthic terrain map

• Automated user friendly system

• Standardized language

• Collaboration - share analyses

Charting Our Course

• Benthic Terrain Modeler (BTM) Methodology

• BTM Program

• Case Study: Vatia Bay, American Samoa

4

BTM Methodology 101

Fine BPI+

+Coarse BPI

Slope

Step One Step Two Step Three

Bathymetry

BenthicTerrain

Step Four

ClassificationDictionary

Bathymetric Position Index – How it Works

Hilltop

ValleyCoarse BPI

Ridge Crest

Stream Channel

Open Slope

Fine BPI

Bathymetric Position Index

ClassifiedTerrain Map

Stream Channel onA Sloping Hillside

Run the data through the dictionary and…

7

BTM Methodology 101

Fine BPI+

+Coarse BPI

Slope

Step One Step Two Step Three

Bathymetry

BenthicTerrain

Step Four

ClassificationDictionary

Charting Our Course

• Benthic Terrain Modeler Methodology

• BTM Program

• Case Study: Vatia Bay, American Samoa

Wizard Interface

Help Menu

Time Saving – Re-use Results

Classification Dictionary

Classification Dictionary

Classification Dictionary - XML

System Recommendations

• ArcGIS 8.x or ArcGIS 9.0 SP2

• Spatial Analyst

• > 2.0 Ghz Processor

• > 1Gigabyte of Hard Disk Space

Charting Our Course

• Benthic Terrain Modeler Methodology

• BTM Program

• Case Study: Vatia Bay, American Samoa

Vatia Bay

Tutuila Island and Vatia Bay

Bathymetry

Benthic Terrain of Vatia Bay

Profile Analysis

Image Courtesy of NOAA Biogeography

Reef CrestForereef

Reef Crest

Forereef

Benthic Terrain of Vatia Bay

Distribution on the web

http://dusk.geo.orst.edu/djl/samoa/tools.html

Charting Our Course

• Benthic Terrain Modeler Methodology

• BTM Program

• Case Study: Vatia Bay, American Samoa

Objectives – Re-visited

• Improve bathymetric mapping with GIS

• Generate a classified benthic terrain map

• Automated user friendly system

• Standardized language

• Collaboration - share analyses

Soothsaying

• Seafloor mapping community driven

• Applicability outside of coral reefs

• Ground-truthing mission

Thanks

• Pat Iampetro

• Andy Weiss

• Jeff Jenness

AAG - April 8th 2005

3-D BENTHIC TERRAIN MAPPING AND MODELING IN AMERICAN SAMOA

Ronald W RinehartOregon State Universityrineharr@onid.orst.edu

Dr. Dawn WrightOregon State Universitydusk@dusk.geo.orst.edu

Emily LundbladJoint Inst. for Marine and Atmospheric Research, Coral Reef Ecosystem Div., NOAA Fisheries, Univ. of Hawaii ManoaEmily. Lundblad@noaa.gov

Emily LarkinKnauss Marine FellowEmily.larkin@gmail.com

Joshua MurphyNOAA Coastal Services CenterJoshua.Murphy@noaa.gov

Lori Cary-KotheraNOAA Coastal Services CenterLori.Cary-Kothera@noaa.gov