Identification_Information: Citation: Citation_Information: Originator: Susan H. Cannon Originator: Kathleen M. Haller Originator: Ingrid Ekstrom Originator: Eugene S. Schweig III Originator: Graziella Devoli Originator: David W. Moore Originator: Sharon A. Rafferty Originator: Arthur C. Tarr Publication_Date: 2001 Title: nic_cldd Geospatial_Data_Presentation_Form: vector digital data Series_Information: Publication_Information: Online_Linkage: http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0412A Larger_Work_Citation: Citation_Information: Originator: Susan H. Cannon Originator: Kathleen M. Haller Originator: Ingrid Ekstrom Originator: Eugene S. Schweig III Originator: Graziella Devoli Originator: David W. Moore Originator: Sharon A. Rafferty Originator: Arthur C. Tarr Publication_Date: 2001 Title: LANDSLIDE RESPONSE TO HURRICANE MITCH RAINFALL IN SEVEN STUDY AREAS IN NICARAGUA Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 01-412-A Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://greenwood.cr.usgs.gov/pub/ofr-01-412-A Description: Abstract: This coverage includes the areas obscured by clouds in the aerial photographs used to map landslides in seven study areas in Nicaragua following Hurricane Mitch. Purpose: The passage of Hurricane Mitch through Central America in October and November 1998 caused widespread and devastating flooding and landsliding. In this data set we show the areas covered by clouds that might have obscured the presence of landslides in aerial photographs taken following Hurricane Mitch in Nicaragua. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: October 1998 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -86.289856 East_Bounding_Coordinate: -85.870026 North_Bounding_Coordinate: 13.166706 South_Bounding_Coordinate: 12.840271 Keywords: Theme: Theme_Keyword: landslides Theme_Keyword: Huricane Mitch Theme_Keyword: rainfall Theme_Keyword: debris flow Theme_Keyword: earth flow Theme_Keyword: debris-flow susceptibility Place: Place_Keyword: Nicaragua Place_Keyword: Departamento de Jinotega Place_Keyword: Departamento de Leon Place_Keyword: Departamento de Esteli Place_Keyword: Departamento de Matagalpa Place_Keyword: Departamento de Nueva Segovia Place_Keyword: Departamento de Chinandega Temporal: Temporal_Keyword: October 1998 Access_Constraints: None Use_Constraints: Should only be used in maps whose scale is smaller than 1:50,000. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Susan H. Cannon Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: USGS, MS 966 Address: Denver Federal Center Address: Box 25046 City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: (303) 273-8604 Contact_Facsimile_Telephone: (303) 273-8600 Contact_Electronic_Mail_Address: cannon@usgs.gov Hours_of_Service: 0800 - 1630 Mountain Time M-F Security_Information: Security_Classification: Unclassified Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 1; ESRI ArcCatalog 8.1.1.649 Cross_Reference: Citation_Information: Series_Information: Publication_Information: Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Attribute accuracy was assured by visually comparing compilation copy with plotted map in which cloud cover was mapped. Logical_Consistency_Report: Registration accuracy was checked by inspecting plots of the data and graticule overlaid on a Digital Raster Graphic (DRG) of the base map. Topological consistency was checked by assuring that all data polygons had one label point. Completeness_Report: Completeness was assured by visually inspecting the compilation copy overlaid on the plotted map looking for missing polygons. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The small scale of the photographs, and the method of manually transferring the extend of the cloud cover observed on the aerial photographs, dicates that the locations of the clouds are accurate to within about 200m. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Defense Threat Reduction Agency Geospatial_Data_Presentation_Form: aerial photographs Online_Linkage: http://www.mitchnts1.cr.usgs.gov.data.aerial.html Source_Scale_Denominator: 60000 Type_of_Source_Media: aerial photographs Source_Time_Period_of_Content: Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Open-Skies Program Source_Information: Source_Scale_Denominator: 30000 Type_of_Source_Media: aerial photographs Source_Citation_Abbreviation: Open Skies Program Process_Step: Process_Description: Aerial photographs taken between December 4 and December 19, 1998 under the Open Skies program of the Defense Threat Reduction Agency (http://www. mitchnts1.cr.usgs.gov.data.aerial.html) were used to map the cloud cover. The aerial photographs are at 1:60,000-scale, and 1:30,000-scale for portions of the Matagalpa and Jinotega/San Rafael del Norte study areas. Digital Raster Graphics (DRG) scanned images of 1:50,000-scale quadrangles projected to Transverse Mercator were used as base maps for the mapping. We mapped the cloud cover by first locating it on the aerial photographs using a mirror stereoscope and then manually plotting by inspection a polygon that best represented the shape and size of the cloud onto the base maps. In some cases, the base maps were enlarged to 1:25,000-scale to facilitate mapping. Process_Step: Process_Description: The mapped areal extent of the cloud cover was digitized, and then digitally registered to the DRG base maps. Final maps are presented at 1:50,000 scale. Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Complete chain Point_and_Vector_Object_Count: 59 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Label point Point_and_Vector_Object_Count: 43 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 32 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 36 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000000 Longitude_Resolution: 0.000000 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: nic_cldd.pat Entity_Type_Definition: Polygon attribute table 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: Positive real numbers that are automatically generated. Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: NIC_CLDD# 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: NIC_CLDD-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Overview_Description: Distribution_Information: Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Transfer_Size: 0.043 Metadata_Reference_Information: Metadata_Date: 20011205 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Richard L. Dart Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: USGS, MS 966 Address: Denver Federal Center Address: Box 25046 City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: (303) 273-8631 Contact_Facsimile_Telephone: (303) 273-8600 Contact_Electronic_Mail_Address: rdart@usgs.gov Hours_of_Service: 0800 - 1630 Mountain Time M-F Contact_Instructions: E-mail contact is preferred 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 Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile