J.Otero Presentation MHM
- 2. What is MHM? Integration of: Physical Sampling Satellite Data Aircraft Methods Shipboard Remote Sensing Data Cogan et al. 2009
- 3. MHM Integration Adapted from Cogan and Noji 2007
- 4. Physical Sampling Dredging Sediment Profile Imagery Tool acts as an inverted periscope
- 5. Sediment Profile This can be a less expensive way to gain knowledge of sediment type than core samples according to MESH
- 6. Satellite Data LiDar (Light Detecting and Ranging) Bathymetry Uses GPS and Laser to create images similar to sonar.
- 7. Combination of Methods Laser Airborne Methods (LADS) and Light Detecting and Ranging (LiDar) www.searchmesh.net
- 8. Aircraft Methods Aerial Photography Seagrass (Zostera marina) habitat map Similar to terrestrial habitat community level mapping www.searchmesh.net
- 9. Remote Sensing Side-Scan Sonar Towfish *Has the capability to capture hundreds of meters 1. Depth inside acoustic path 2. Vertical beam angle 3. Range setting 4. Width covered by one signal 5. Tow depth of side scan sonar 6. Port and starboard channel separation 7. Swath width across seafloor. www.starfishsonar.com
- 10. Remote Sensing cont’d Single beam sonar/echosounder Fish finder Lower frequencies penetrate seafloor whereas higher frequencies (kHz) provide a clearer seabed image. www.whoi.edu
- 11. MHM is Great, But… Vessel Noise Timing Off Errors Corrected www.searchmesh.net
- 12. Conservation Cogan et al. 2009
- 13. Making Sense of Mapping MHM using MESH EUNIS Color Schematic
- 14. Conclusion MHM is still a new science that is growing as technology is developing. More organizations need to work together towards a common goal in order to utilize MHM. Although time consuming the pay off is great!
- 15. Works Cited Primary Literature: Bulat. 2005 “Interpretation of Seabed Images on Commercial 3D Seismic” Cogan et al. 2009 “The Role of Marine Habitat in Ecosystem Based Management” Diaz, José Vicente Martínez. 2000 “Analysis of Multibeam Sonar Data for the Characterization of Seafloor Habitats.” Fish, J.P. & Carr, A.H. 2000 “Sound Reflections: Advanced Applications of Side Scan Sonar” Huising, E.J. & Gomes, P.L.M. 1998 “Errors and accuracy estimates of laser data acquired by various laser scanning systems for topographic applications.” Mishra, D. 2003 Processing GPS data from the NASA Experimental Advanced Research LiDAR University of Nebraska Smith, R.A., Irish, J.L. & Smith, M.Q. 2000 “Airborne LiDAR and airborne hyperspectral imagery: a fusion of two proven sensors for improved hydrographic surveying.” Web Resources: www.discover.whoi.eu www.ct.gov/DEP www.fws.gov www.searchmesh.net www.starfishsonar.com