HYPACK BATHYMETRYEY GENERATOR
The technique, known as CUBE (Combined Uncertainty and Bathymetric Estimator), is an error-model based, direct DTM generator that estimates the depth plus a confidence interval directly on each node point of a bathymetric grid. We explored a number of different approaches for automated data processing but have focused our effort on a technique developed by Brian Calder that is both very fast (10's to 100's of times faster than the standard processing approaches) and statistically robust. This data processing step is one of the most serious bottlenecks in the hydrographic "data processing pipeline" at NOAA, NAVO, and hydrographic agencies and survey companies worldwide. CopyrightĬopyright ownership resides with the originator.One of the major efforts of the Center has been to develop improved data processing methods that can provide hydrographers with the ability to very rapidly and accurately process the massive amounts of data collected with modern Multibeam systems. These data may not be reproduced or used for any purpose without permission. Non affiliates seeking access should contact the publisher directly. Affiliates are limited to current faculty, staff and students. Use and reproduction These data are licensed by Stanford Libraries and are available to Stanford University affiliates only. PublisherĬalifornia Seafloor Mapping Project Place(s)Ĭontinental margins, Bathymetric maps, Digital elevation models, Elevation, Imagery and Base Maps, and Inland Waters Year Downloadable data are provided in native coordinate system or projection. This layer is presented in the WGS84 coordinate system for web display purposes. A comprehensive 5m data set was produced for the total survey coverage only if per block data exceeded 85m depth and 5m resolution products were included. Data acquisition, post-processing, and final products derived from multibeam bathymetry data were handled by the Seafloor Mapping Lab at CSUMB.īathymetry products are presented according to standard California State Mapping Project specifications, including depth-dependent resolutions of 2m for data from the 0-85m depth range, 5m for 80-250m depth range, and 10m for depths of 230-1500m. KGPS altitude data were used to account for tide cycle fluctuations and sound velocity profiles were collected with an Applied Microsystems SVPlus sound velocimeter. An Applanix POS/MV 320 v4 system was used to provide position and attitude data during data collection and accounted for vessel motion such as heave, pitch, and roll (position accuracy ± 2m, pitch, roll and heading accuracy ☐.02°, heave accuracy ± 5% or 5cm) with input from a Cnav® enabled NAVCON 2050 GPS.
HYPACK BATHYMETRYEY SOFTWARE
Prior to data collection, a series of planned survey lines were created using the survey navigation and planning software Hypack 2008 from Hypack, Inc. Available at: MBES and side scan data for the South Monterey Bay region were acquired using a 200 KHz/ 400 KHz Reson 7125 sonar aboard the R/V VenTresca by the Seafloor Mapping Lab at California State University Monterey Bay. 5-Meter Bathymetric Slope Grid: Portuguese Ledge, Monterey Bay, California, 2008. The tiered mapping campaign involves the use of state-of-the-art sonar, LIDAR (aerial laser) and video seafloor mapping technologies computer aided classification and visualization expert geologic and habitat interpretations codified into strip maps spanning California's land/sea boundary and the creation of an online, publicly accessible data repository for the dissemination of all mapping products. This statewide project requires, involves and leverages expertise from industry, resource management agencies and academia. The ultimate goal is the creation of a high-resolution 1:24,000 scale geologic and habitat base map series covering all of California's 14,500 km2 state waters out to the 3 mile limit, and support of the state's Marine Life Protection Act Initiative (MLPA) goal to create a statewide network of Marine Protected Areas (MPAs).
Marine data offered here represent the efforts of a comprehensive state waters mapping program for California launched by the California State Coastal Conservancy, Ocean Protection Council, Department of Fish and Game, and the NOAA National Marine Sanctuary Program.
This layer was created as part of the California Seafloor Mapping Project. The surveys for Portuguese Ledge were conducted on June 14 & 16, 2008. This raster dataset is a 5-meter resolution slope grid containing multibeam bathymetry data for the Portuguese Ledge region of Monterey Bay, California.