{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "This polygon feature class relates critical information about magnetic anomaly maps from individual magnetic surveys so that researchers may quickly discern the quality of the data, including how the data was collected, what processing parameters were used, where the survey was located, any special comments from the author[,] and what the core results of the survey were. Provided within this feature class is a hyperlink to a figure if there is one available.", "description": "

Magnetic geophysical surveys are carried out to understand magnetic properties of subsurface rocks. Scientists can interpret variations in measurements of Earth's magnetic field from place to place across the surface of the Earth in terms of corresponding changes in rock magnetism within the subsurface. Geophysicists work with geologists to relate these magnetic changes to known rock types in the area and thus provide constraint on models of the subsurface (for example, geologic cross-sections). A magnetic anomaly map shows changes in earth's magnetism over both latitude and longitude. These variations in the local magnetic field can be attributed to changes in lithology over an area. The map is usually created via mathematical gridding algorithm from individual point or profile data. This map may exist within the greater extent of a project area. <\/SPAN><\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "summary": "This polygon feature class relates critical information about magnetic anomaly maps from individual magnetic surveys so that researchers may quickly discern the quality of the data, including how the data was collected, what processing parameters were used, where the survey was located, any special comments from the author[,] and what the core results of the survey were. Provided within this feature class is a hyperlink to a figure if there is one available.", "title": "Magnetic Anomaly Map", "tags": [ "magnetic", "magnetometer", "magnetic anomaly", "diurnal", "upward continued" ], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 150000000, "maxScale": 5000, "spatialReference": "", "accessInformation": "", "licenseInfo": "

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The Washington Geological Survey (WGS) shall not be held liable for improper or incorrect use of the data described and/or contained herein. This product is provided 'as is' without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular use. The Washington State Department of Natural Resources and the authors of this product will not be liable to the user of this product for any activity involving the product with respect to the following: (a) lost profits, lost savings, or any other consequential damages; (b) the fitness of the product for a particular purpose; or (c) use of the product or results obtained from use of the product. Although these data have been processed successfully on computers of WGS, no warranty, expressed or implied, is made by WGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty.<\/SPAN><\/P><\/DIV><\/DIV>", "portalUrl": "" }