![]() ![]() Objective - create a comprehensive coastal/marine bathymetric, geologic, and habitat base map series for all state waters (MHHW - 3nm). OverviewĪ virtual “flight” over seafloor features offshore of Southern California, as if the water has been drained away. Facilitating outreach to heighten public education and awareness of coastal ecosystems, resources, and issuesĭata collected during this project reveal the seafloor offshore of the California coast in unprecedented detail (for example, see the computer animations on this page) and provide an ecosystem context for the effective management of this precious marine resource.Providing a framework for scientific research.Enabling more effective regulation of offshore development.Providing a database of sediment distribution and thickness, important input for regional sediment management.Identifying offshore active faults and submarine landslides, providing the basis for earthquake and tsunami hazard assessments and hazard mitigation.Enabling modeling of coastal flooding from sea-level rise and large storms.Establishing baselines for long-term monitoring of coastal evolution related to climate change, large storms, and anthropogenic influences.Definition of habitats for ecosystem-based management.View largerĪlthough the CSMP was originally developed to support the design and monitoring of marine reserves through the Marine Life Protection Act, accurate statewide mapping of the seafloor has also contributed significantly to these efforts: A link from thumbnail images to the MrSid online viewer allows users to zoom into each image at ever increasing resolutions.A virtual “flight” over seafloor features offshore of Central California near San Francisco, as if the water has been drained away. Thumbnail images were derived from the MrSid images in jpeg format. XML encoded digital objects were created from this database, stored in a repository, then presented on the Web with a MOA II Java viewer. Bibliographic, administrative, image, and metadata were keyed into a relational database. Tools developed by UC Berkeley for archival collections called Making of America II (MOA II) were used for this project. Final scanning of the collection was completed in July 2001 Shipment of image files back to the library was on CD-ROMS and DLT IV media. No other image enhancements or manipulations were made. ![]() For the Web presentation, images were converted to LizardTech's MrSid format at a compression ratio of 40:1. Map image file sizes ranged from 600 MB to 1.3 GB each and were saved as uncompressed tiff files. Maps were scanned at 800 dpi, 24 bit color on an Anatech 4080C scanner. Maps were digitized at the USGS's National Mapping Division, initially at the Rocky Mountain Center, later at the Reston facility. Some editions of the quadrangles were published by the Corps of Engineers, the Army Map Service, or the Defense Mapping Agency. Efforts were made to only digitize first editions of quadrangles and not use reprint editions where the date of situation was uncertain. ![]() 350 maps were carefully selected to represent a historic perspective of the changing landscape of the region from rural to densely urban. Historic topographic maps are invaluable for tracking changes in land use, development of transportation systems, and growth of urban areas. Reyes south to Half Moon Bay and east to Antioch, Livermore and San Jose. These maps are in the Public Domain and have no copyright restrictions, and the geographic area selected is of high use and interest to our primary clientele, as well as off-site users.Īccess is provided to both the 15- and 7.5-minute USGS topographic quadrangles, spanning more than 100 years of mapping (1885-1999). Geological Survey's topographic quadrangles of the San Francisco Bay region were selected for digitizing. One-time funds were requested and received from the Library's collections budget to cover scanning and other project costs. ![]() This Pilot Project was first conceived in May 1999 to provide Web access to high use maps from the University of California-Berkeley's Earth Sciences and Map Library's collection. ![]()
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