Metadata: Identification_Information: Citation: Citation_Information: Originator: Christian G. Raumann Originator: Scott Stine Originator: Alexander Evans Originator: Jerry Wilson Publication_Date: 2002 Title: Digital Bathymetric Model of Mono Lake, California Geospatial_Data_Presentation_Form: ArcInfo GRID Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map Issue_Identification: MF-2393 Online_Linkage: http://pubs.usgs.gov/mf/2002/2393/ Description: Abstract: In 1986 and 1987, Pelagos Corporation of San Diego (now Racal Pelagos) undertook a bathymetric survey of Mono Lake in eastern California for the Los Angeles Department of Water and Power (DWP). The result of that survey was a series of maps at various scales and contour intervals. From these maps, the DWP hoped to predict consequences of the drop in lake level that resulted from their diversion of streams in the Mono Basin. No digital models, including shaded-relief and perspective-view renderings, were made from the data collected during the survey. With the permission of Pelagos Corporation and DWP, these data are used to produce a digital model of the floor of Mono Lake. The model was created using a geographic information system (GIS) to incorporate these data with new observations and measurements made in the field. This model should prove to be a valuable tool for enhanced visualization and analyses of the floor of Mono Lake. Purpose: These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) or other software to display bathymetry data of Mono Lake, California. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1986 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -119.155169 East_Bounding_Coordinate: -118.901489 North_Bounding_Coordinate: 38.079551 South_Bounding_Coordinate: 37.937339 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geomorphology Theme_Keyword: land surface characteristics Theme_Keyword: sonar methods Theme_Keyword: bathymetry Theme_Keyword: maps and atlases Theme_Keyword: geospatial datasets Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Categories Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: none Place_Keyword: California Place_Keyword: CA Place_Keyword: Mono Lake Place_Keyword: USA Place: Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4 Place_Keyword: f06051 = Mono Access_Constraints: None Use_Constraints: These data not intended for navigational purposes. Please recognize the U.S. Geological Survey (USGS) as the source of this information. USGS-authored or produced data and information are in the public domain. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Christian G. Raumann Contact_Organization: United States Geological Survey (USGS) Contact_Position: Geographer Contact_Address: Address_Type: mailing and physical address Address: 345 Middlefield Road, Mail Stop 531 City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Contact_Voice_Telephone: (650) 329-5648 Contact_Facsimile_Telephone: (650) 329-4429 Contact_Electronic_Mail_Address: craumann@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/mf/2002/2393/mono_thumbs.jpg Browse_Graphic_File_Description: Reduced-size image of the map sheets, 633x260 pixels, 105k bytes. Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 2; ESRI ArcCatalog 8.1.1.649 Data_Quality_Information: Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: 2.0 meters Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: According to the Pelagos report, the Raytheon echo sounder used had an accuracy of 0.06 meters (0.2 feet) and their digitizing system had an accuracy of 0.08 meters (0.25 feet). Their field calibration steps were designed to meet or exceed the manufacturer's stated accuracy, bringing accuracy of depth measurements to within than 0.15 meters (0.5 feet). The ArcInfo GRID was generated from digitized contours of the hard-copy maps and not the actual 29,650 survey points. Therefore, the accuracy of the ArcInfo GRID relies upon the original cartography work done by Pelagos and the data processing performed thereafter. Lineage: Process_Step: Process_Description: The survey data were collected along approximately 1,020 kilometers of sounding lines using two 24-foot boats, each equipped with an echo sounder, sub-bottom profiler (boomer-type system), sidescan sonar, and electronic navigation system. Water depths were measured by survey-grade echo sounders every 15 meters along each survey line, and recorded onto floppy disk along with the position data. The data was then transferred into a VAX-11/780 VMS mini-computer for editing and digitizing by a Science Accessories Model GP8 sonic digitizer. A total of 29,650 depth points were used to construct the bathymetric portion of the hard-copy topographic maps, which were then digitized and then this digital contour data was processed and the ArcInfo GRID was generated. Process_Step: Process_Description: Creation of original metadata record Process_Date: 20020610 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Christian G. Raumann Contact_Organization: United States Geological Survey Contact_Address: Address_Type: mailing and physical address Address: 345 Middlefield Road, Mail Stop 531 City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Contact_Voice_Telephone: (650) 329-5648 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 1531 Column_Count: 2195 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 11 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -117 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 10.0 Ordinate_Resolution: 10.0 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Grid cell Entity_Type_Definition: Estimated bathymetry of the area subtended by the cell Attribute: Attribute_Label: elevation Attribute_Definition: Elevation in feet above mean sea level Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6228.533 Range_Domain_Maximum: 6390.000 Attribute_Units_of_Measure: feet Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: United States Geological Survey (USGS) Contact_Organization: Information Services Contact_Address: Address_Type: mailing address Address: Box 25286 City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: (888) ASK-USGS Distribution_Liability: These data not intended for navigational purposes. Please recognize the U.S. Geological Survey (USGS) as the source of this information. USGS-authored or produced data and information are in the public domain. Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, these data and information are provided with the understanding that they are not guaranteed to be usable, timely, accurate, or complete. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user. Neither the U.S. Government nor any agency thereof, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any data, software, information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ArcInfo Grid Format_Version_Number: 8.1 Format_Information_Content: Bathymetric grid File_Decompression_Technique: unzip Transfer_Size: 47 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/mf/2002/2393/monobathy.zip Fees: none Metadata_Reference_Information: Metadata_Date: 20160613 Metadata_Review_Date: 20030211 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter N Schweitzer Contact_Organization: USGS Midwest Area Contact_Position: Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/ Contact_Address: Address_Type: mailing address Address: Mail Stop 954 12201 Sunrise Valley Dr City: Reston State_or_Province: VA Postal_Code: 20192-0002 Country: USA Contact_Voice_Telephone: 703-648-6533 Contact_Facsimile_Telephone: 703-648-6252 Contact_Electronic_Mail_Address: pschweitzer@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998