USGS Geoscience Data Catalog
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Pike, Richard J., Graymer, Russell W., Roberts, Sebastian, Kalman, Naomi B., and Sobieszczyk, Steven, 2001, Map and map database of susceptibility to slope failure by sliding and earthflow in the Oakland area, California: U.S. Geological Survey Miscellaneous Field Studies Map MF-2385, U.S. Geological Survey, Menlo Park, CA.Online Links:
This is a Raster data set. It contains the following raster data types:
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 1.0
Ordinates (y-coordinates) are specified to the nearest 1.0
Planar coordinates are specified in METERS
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.98.
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Minimum: | 0 |
Maximum: | 133 |
Resolution: | 1 |
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Minimum: | 0 |
Maximum: | 109 |
Range of values | |
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Minimum: | 0 |
Maximum: | 133 |
Units: | susceptibility |
Resolution: | 1 |
Range of values | |
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Minimum: | 12 |
Maximum: | 345386 |
Units: | number of grid cells |
Resolution: | 1 |
Richard J. Pike (USGS) co-conceived the project and directed the overall effort, supplied ideas and topographic parameters to be experimented with by Sebastian Roberts, contributed to creating ( with Scott Graham, USGS) the 30-m digital elevation model, devised the final model, prepared the tables, decided on figures to be made, chose colors for map, and prepared all versions of the pamphlet text and designed its final layout.
Russell W. Graymer (USGS) co-conceived the project and delimited the study area, supplied ideas to be experimented with by S. Roberts, furnished the digital geologic map and list of 120 map units, devised the first model for within-landslide susceptibility, conceived the tests of the model-particularly normalization of the post-1970 landslide data, and contributed to the pamphlet.
Sebastian Roberts (USGS and Environmental Careers Organization) digitized the original 1:24,000-scale landslide maps and map positions of the post-1970 landslides, compiled the digital data on geology, ground slope, landslide inventory, recent landsliding, and land use in the Arc/Info geographic information system, wrote the Arc Macro Language (AML) to make computations, computed the first set of susceptibility values, and created the earliest versions of the 1:50,000-scale color map.
Naomi B. Kalman (USGS and Environmental Careers Organization) recompiled data, adjusted the susceptibility and plot AMLs, computed the revised set of susceptibility values, made preliminary versions of pamphlet figures, based off her database files, produced intermediate versions of the map, and served as a resource for later work on the project.
Steven Sobieszczyk (USGS and Environmental Careers Organization) recompiled some of the data, rewrote the plot AML, computed the revised susceptibility values, created or modified color and monochrome illustrations for the map and pamphlet, prepared the final versions of the map, annotated and reformatted the map to conform to USGS publication standards, and made corrections to the map after technical reviews. He wrote the metadata for the digital file, and helped format the pamphlet to conform to USGS publication standards.
650-329-4947 (voice)
650-329-4936 (FAX)
rpike@usgs.gov
Mitigation is superior to post-disaster response in reducing the billions of dollars in losses resulting from U.S. natural disasters, and information that predicts the varying likelihood of geologic hazards can help public agencies improves the necessary decision making on land use and zoning. Accordingly, this map was created to increase the resistance of one urban area, metropolitan Oakland, California, to landsliding. Prepared in a geographic information system from a statistical model, the map estimates the relative likelihood of local slopes to fail by two processes common to this area of diverse geology, terrain, and land use.
Nilsen, Tor, 1975, Preliminary photo-interpretation maps of landslide and other surficial deposits of 56 7.5-minute quadrangles, Alameda, Contra Costa, and Santa Clara Counties, California: U.S. Geological Survey Open File Report 75-277.
Graymer, R.W., 2000, Geologic map and map database of the Oakland metropolitan area, Alameda, Contra Costa, and San Francisco Counties, California: U.S. Geological Survey Miscellaneous Field Studies Map MF-2342.
U.S. Geological Survey, 19790701, DEM 7.5 Quadrangle: U.S. Geological Survey, Reston, VA.
File name coverage contents MF-2385_5a.e00 drain drainage base map for Oakland area MF-2385_5b.e00 culture cultural base map, including names MF-2385_5c.e00 roads street pattern and road network MF-2385_5d.e00 hwys interstate highways MF-2385_5e.e00 hydro streams, lakes, bays, rivers
This report has undergone two scientific peer reviews, one digital database review, one review for conformity with geologic names policy, and review of the plotfiles for conformity with USGS map standards.
Well located data items are intended to have a horizontal positional accuracy within 1.2 mm at 1:50,000 scale, or within 30 meters on the ground. The position of each data item is derived from the USGS topographic base map, and therefore additional inaccuracies arising from inaccuracies in the base map may also be encountered. See Aitken (1997) for information regarding the horizontal positional accuracy of the basemaps.
No vertical positional data recorded. See Aitken (1997) for information regarding the vertical positional accuracy of the basemaps used to create the plotfiles of the geologic maps.
The report is intended to describe landslide susceptibility at a 1:50,000 scale. Information measured in 30 meter grid squares. Any attempt to use at higher resolution will significantly reduce the accuracy for prediction and evaluation purposes. Please consult contracted geologist for ground survey to evaluate site specific risk.
Susceptibility within landslide deposits (0.00 to 1.33) is this same percentage raised by a multiplier (1.33) derived from the comparative frequency of recent failures within and outside the old deposits.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- Uses of this digital landslide susceptiblity map should not violate the spatial resolution of the data. Although the digital form of the data removes the constraint imposed by the scale of a paper map, the detail and accuracy inherent in map scale are also present in the digital data. The fact that this database was edited for a scale of 1:50,000 means that higher resolution information, greater than 30 meter cell size, is not present in the dataset. Plotting at scales larger than 1:50,000 (30m cell size) will not yield greater real detail, although it may reveal fine-scale irregularities below the intended resolution of the database. Similarly, where this database is used in combination with other data of higher resolution, the resolution of the combined output will be limited by the lower resolution of these data.
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USGS Miscellaneous Field Studies Map MF-2385
Information in this data set is approved for release to the public by the Director, U.S. Geological Survey. This information has been reviewed but may still contain errors or inconsistencies, of which we would like to be made aware. Generally USGS data is not intended for use in navigation. Trade names are given for reference and do not constitute institutional endorsement.
Data format: | Susceptibility grid (30 meter cell size) in format ArcInfo GRID (version 7.2.1) Size: 840 KB |
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Network links: |
<http://pubs.usgs.gov/mf/2002/2385/mf-2385_3.e00.gz> |
Data format: | Base map data: drainage, cultural features, streets, interstate hightways, streams, lakes, bays, and rivers in format Shapefile (version 1.0) Size: 1 MB |
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Network links: |
<http://pubs.usgs.gov/mf/2002/2385/mf-2385_5.tar.gz> |
Data format: | Drainage base map for Oakland area in format ArcInfo export (version 7.2.1) Size: 1.1 MB |
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Network links: |
<http://pubs.usgs.gov/mf/2002/2385/mf-2385_5a.e00.gz> |
Data format: | Cultural base map, including names in format ArcInfo export (version 7.2.1) Size: 320 KB |
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Network links: |
<http://pubs.usgs.gov/mf/2002/2385/mf-2385_5b.e00.gz> |
Data format: | Street pattern and road network in format ArcInfo export (version 7.2.1) Size: 88 KB |
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Network links: |
<http://pubs.usgs.gov/mf/2002/2385/mf-2385_5c.e00.gz> |
Data format: | Interstate highways in format ArcInfo export (version 7.2.1) Size: 556 KB |
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Network links: |
<http://pubs.usgs.gov/mf/2002/2385/mf-2385_5d.e00.gz> |
Data format: | Streams, lakes, bays, rivers in format ArcInfo export (version 7.2.1) Size: 2.1 MB |
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Network links: |
<http://pubs.usgs.gov/mf/2002/2385/mf-2385_5e.e00.gz> |
650-329-4947 (voice)
650-329-4936 (FAX)
rpike@usgs.gov