Identification_Information: Citation: Citation_Information: Originator: Rukstales, Kenneth S. Originator: Love, Jeffrey J. Publication_Date: 2007 Title: Horizontal Intensity Chart (Sheet 3 of 5) [coverage containing points, igrf2005hpts] Edition: version 1.0 Geospatial_Data_Presentation_Form: Map Series_Information: Series_Name: U.S. Geological Survey Scientific Investigations Map Issue_Identification: 2964 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/sim/2007/2964/ Larger_Work_Citation: Citation_Information: Originator: Rukstales, Kenneth S. Originator: Love, Jeffrey J. Publication_Date: 2007 Title: The International Geomagnetic Reference Field, 2005 Edition: version 1.0 Geospatial_Data_Presentation_Form: Map Series_Information: Series_Name: U.S. Geological Survey Scientific Investigations Map Issue_Identification: 2964 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/sim/2007/2964/ Description: Abstract: This is one of five world charts showing the declination, inclination, horizontal intensity, vertical component, and total intensity of the Earth's magnetic field at mean sea level at the beginning of 2005. This particular data set is for the horizontal intensity of the Earth's magnetic field. The charts are based on the 10th generation International Geomagnetic Reference Field (IGRF-10) main model for 2005 and secular change model for 2005-2010. The IGRF is referenced to the World Geodetic System 1984 ellipsoid. Purpose: This map is intended to show the Earth's main magnetic field and its annual rate of change (secular variation) based on the 10th generation International Geomagnetic Reference Field (IGRF-10). The IGRF is a mathematical model of the Earth's main magnetic field and its secular variation based upon data from magnetic observatories and satellite magnetic missions. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2005 Ending_Date: 2010 Currentness_Reference: The basis on which the time period of content information is determined. Status: Progress: Complete Maintenance_and_Update_Frequency: 5 years Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -180 East_Bounding_Coordinate: 180 North_Bounding_Coordinate: 90 South_Bounding_Coordinate: -90 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: IGRF Theme_Keyword: Geomagnetic Theme_Keyword: Geomagnetism Theme_Keyword: Magnetic Theme_Keyword: Declination Theme_Keyword: International Access_Constraints: None Use_Constraints: The data are for the years 2005 - 2010. Acknowledgment of the U.S. Geological Survey, Geomagnetism Program would be appreciated in products derived from these data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Ken Rukstales Contact_Organization: U.S. Geological Survey - Geologic Hazards Team Contact_Address: Address_Type: mailing address Address: Box 25046, MS 966 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-273-8677 Contact_Electronic_Mail_Address: rukstales@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/sim/2007/2964/2964-3.pdf Browse_Graphic_File_Description: Full-size, complete version of the horizontal intensity chart of the International Geomagnetic Reference Field, 2005 Browse_Graphic_File_Type: PDF Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcGIS 9.1 Service Pack 2 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: This data set is based on a mathematical model of the the Earth's magnetic field. The accuracy of any magnetic field component attribute is dependent on the model's ability to calculate the Earth's magnetic field at any location on Earth. Logical_Consistency_Report: No duplicate points are present. Completeness_Report: Data are complete. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The location of features is based on a mathematical model of the Earth's magnetic field. The location of each point is considered to be correct within the confines of computer accuracy. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The data are computed at mean sea level based on the mathematical model of the Earth's magnetic field. Lineage: Process_Step: Process_Description: The associated horizontal intensity, based on the 10th generation International Geomagnetic Reference Field, was calculated for a grid of points, having a latitude and longitude spacing of 0.25 degrees. The data were imported into a grid and contoured using ArcGIS. The desired contours for the map were selected and polygon and arc topology were ascertained as well as appropriate feature attributes. Point values of horizontal intensity were selected from the gridded data where additional information was needed to supplement the contours. These points were mainly selected in critical areas of maxima, minima, and saddles. Process_Date: 2005 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Ken Rukstales Contact_Organization: U.S. Geological Survey - Geologic Hazards Team Contact_Address: Address_Type: mailing address Address: Box 25046, MS 966 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-273-8677 Contact_Electronic_Mail_Address: rukstales@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity point Point_and_Vector_Object_Count: 5 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 361 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000001 Longitude_Resolution: 0.000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: igrf2005hpts points Entity_Type_Definition: Point values of horizontal intensity of the Earth's magnetic field based on the 10th generation International Geomagnetic Reference Field expressed in nanoTeslas. The horizontal component is the projection of the geomagnetic field vector onto the tangent plane attached to a point on the Earth's surface. The horizontal intensity is the field strength (magnitude) of the horizontal component and is always positive. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: AREA Attribute_Definition: Area of feature in internal units squared. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Area is always zero for point coverages. Values are automatically generated. Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Perimeter is always zero for point coverages. Values are automatically generated. Attribute: Attribute_Label: IGRF2005HPTS# Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: IGRF2005HPTS-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Unique whole numbers that are automatically generated. Attribute: Attribute_Label: H Attribute_Definition: horizobtal intensity in units of nanoTeslas Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 10101.53 Range_Domain_Maximum: 41527.79 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: USGS Information Services Address: P.O. Box 25286, Mail Stop 306 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Facsimile_Telephone: 303-202-4693 Contact_Electronic_Mail_Address: infoservices@usgs.gov Resource_Description: U.S. Geological Survey Scientific Investigations Map 2964 The International Geomagnetic Reference Field, 2005 Hotizontal Intensity Chart Sheet 3 of 5 (Map-On-Demand) Distribution_Liability: Although these data have been used by the U.S. Geological Survey, no warranty, expressed or implied is made by the USGS to the accuracy of the data and related material nor shall the fact of distribution constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith. Standard_Order_Process: Non-digital_Form: Available as one of five printed sheets. Order from USGS at the address listed above or see http://store.usgs.gov/mod/order.html for more ordering information. Fees: For current charges please see http://store.usgs.gov/mod/order.html Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: USGS, Denver Publishing Service Center Address: P.O. Box 25046, Mail Stop 902 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-4845 Contact_Facsimile_Telephone: 303-236-6287 Contact_Electronic_Mail_Address: tpinto@usgs.gov Resource_Description: U.S. Geological Survey Scientific Investigations Map 2964 The International Geomagnetic Reference Field, 2005 Horizontal Intensity Chart Sheet 3 of 5 Distribution_Liability: Although these data have been used by the U.S. Geological Survey, no warranty, expressed or implied is made by the USGS to the accuracy of the data and related material nor shall the fact of distribution constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: PDF Format_Version_Number: version 6.0 Format_Specification: Adobe Portable Document Format Transfer_Size: 2.1 MB Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/sim/2007/2964/2964-3.pdf Fees: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: USGS, Denver Publishing Service Center Address: P.O. Box 25046, Mail Stop 902 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-4845 Contact_Facsimile_Telephone: 303-236-6287 Contact_Electronic_Mail_Address: tpinto@usgs.gov Resource_Description: Downloadable geospatial data sets in ArcInfo export format are available. Distribution_Liability: Although these data have been used by the U.S. Geological Survey, no warranty, expressed or implied is made by the USGS to the accuracy of the data and related material nor shall the fact of distribution constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE Format_Version_Number: 9.1 Format_Specification: ArcGIS version 9.1 coverage format Format_Information_Content: The International Geomagnetic Reference Field, 2005, Horizontal Intensity Chart File_Decompression_Technique: Files need to be decompressed using gzip, winzip, or similar utility Transfer_Size: 2.4 MB Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/sim/2007/2964/sim2964-3.zip Network_Resource_Name: http://pubs.usgs.gov/sim/2007/2964/sim2964-3.tar.gz Fees: none Metadata_Reference_Information: Metadata_Date: 20070302 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Ken Rukstales Contact_Organization: U.S. Geological Survey - Geologic Hazards Team Contact_Address: Address_Type: mailing address Address: Box 25046, MS 966 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-273-8677 Contact_Electronic_Mail_Address: rukstales@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile