10 cm intervals of percent sand content for 186 sediment cores collected in San Francisco Bay, CA, 1990-2016
Percentage of sand content provided in 10 cm intervals down the length of 186 sediment cores collected in San Francisco Bay, California in 1990-91, 2000, 2006, and 2016. Sediment data were obtained from a combination of gravity, box, and push cores ranging in length from 14 to 360 cm. Sand content percentages were obtained from a compilation of visual analyses, descriptive and graphical core logs, and grain size measurements. For the purposes of modeling variability in sand content with depth beneath the San Francisco Bay floor, percent sand content values were converted from variable layer thicknesses based upon natural breaks within the core, to regularly spaced 10-cm intervals using a weighted average.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "PCMSC Science Data Coordinator", "@type": "vcard:Contact", "hasEmail": "mailto:pcmsc_data@usgs.gov" } |
| description | Percentage of sand content provided in 10 cm intervals down the length of 186 sediment cores collected in San Francisco Bay, California in 1990-91, 2000, 2006, and 2016. Sediment data were obtained from a combination of gravity, box, and push cores ranging in length from 14 to 360 cm. Sand content percentages were obtained from a compilation of visual analyses, descriptive and graphical core logs, and grain size measurements. For the purposes of modeling variability in sand content with depth beneath the San Francisco Bay floor, percent sand content values were converted from variable layer thicknesses based upon natural breaks within the core, to regularly spaced 10-cm intervals using a weighted average. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://doi.org/10.5066/P9Y7W1ZM", "mediaType": "application/http", "description": "Landing page for access to the data" }, { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "XML", "mediaType": "text/xml", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.31fa34eb-4d2d-4cca-a66f-1b60a2e9b166.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_31fa34eb-4d2d-4cca-a66f-1b60a2e9b166 |
| keyword |
[ "Alcatraz Island", "Bathymetry and Elevation", "CMHRP", "Carquinez Strait", "Coastal and Marine Hazards and Resources Program", "Golden Gate", "Mining and Mineral Extraction", "PCMSC", "Pacific Coastal and Marine Science Center", "Pacific Ocean", "San Francisco Bay", "San Pablo Bay", "Suisun Bay", "U.S. Geological Survey", "USGS", "USGS:31fa34eb-4d2d-4cca-a66f-1b60a2e9b166", "analytical modeling", "bathymetry", "box coring", "coastal sediment budget", "conceptual modeling", "dredge spoils disposal", "dredging", "drilling and coring", "environment", "estuarine processes", "grab sampling", "gravity coring", "inlandWaters", "mining and quarrying", "ocean processes", "ocean sciences", "sand deposit", "sediment", "sediment analysis", "sediment deposition", "sediment erosion", "sediment resources", "sediment sinks", "sediment sources", "sediment transport", "sedimentation", "stratigraphic thickness", "surface sampling", "suspended material (water)" ] |
| modified | 2025-07-23T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -122.507046, 37.448070, -121.863877, 38.133552 |
| theme |
[ "geospatial" ] |
| title | 10 cm intervals of percent sand content for 186 sediment cores collected in San Francisco Bay, CA, 1990-2016 |
