nic_lsdd

Metadata also available as

Metadata:
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_lsdd
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:
We present an inventory of landslides and related downchannel effects triggered by the passage of Hurricane Mitch, October 21-31, 1998 in seven study areas in Nicaragua. The inventory was compiled from aerial photographs and field mapping. Most (perhaps 95%) of the landslides mapped were debris flows. The maps show debris-flow source areas as small as a few square meters and only a few meters deep that produced debris flows that traveled only tens of meters downslope, to landslides that covered approximately 80,000 m2, and produced debris flows that traveled at least 3 km down channels. The remaining 5% of mapped landslides were slow-moving earthflows that started moving during Hurricane Mitch and continued to move for at least one year.
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 document the landslide and downchannel response to the rainfall that accompanied Hurricane Mitch in seven study areas 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: -86.891151
East_Bounding_Coordinate: -85.779976
North_Bounding_Coordinate: 13.781092
South_Bounding_Coordinate: 12.830777
Keywords:
Theme:
Theme_Keyword: landslides
Theme_Keyword: Hurrican 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 the landslide styles were color coded.
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 map overlaid on the plotted map looking for missing polygons.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The small scale of the aerial photographs used for generating the inventory, and the mapping method of manually transferring the areal extent of observed features to the base maps, dictates that the locations of the landslide features 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 landslides shown on the maps. 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 landslides and related downstream effects by first identifying them on the aerial photographs using a mirror stereoscope and then manually plotting each landslide and its affected area by inspection onto the base maps. In some cases, the base maps were enlarged to 1:25,000-scale to facilitate mapping. Locations of landslides mapped using this procedure are accurate to within about 200 m.
Process_Step:
Process_Description:
Field reconnaissance from April 25 through May 6, 2000 resulted in limited verification of the landslide and related effects mapping. Because of the large areal extent of the study areas and difficulties of access, we visited only a few, small areas. We observed as few as 5% of the landslides in some study areas and as many as 40% of the landslides in others. During this reconnaissance, we mapped the locations and extents of some landslides outside the coverage of the aerial photography. This mapping represents only features that we observed, and is not representative of all the landslide activity in the area.
Process_Step:
Process_Description:
Following field verification, the mapped areal extent of landslides and affected areas were digitized, and then digitally registered to the DRG base maps. A point representing the initiation location of each landslide was also digitized. 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: 5390
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Label point
Point_and_Vector_Object_Count: 4124
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 4100
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 16
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_lsdd.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_LSDD#
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_LSDD-ID
Attribute_Definition: User-defined feature number.
Attribute_Definition_Source: ESRI
Attribute:
Attribute_Label: STYLE
Attribute_Definition: Type of ground failure
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ce
Enumerated_Domain_Value_Definition: channel effects
Enumerated_Domain:
Enumerated_Domain_Value: df
Enumerated_Domain_Value_Definition: debris flow
Enumerated_Domain:
Enumerated_Domain_Value: ds
Enumerated_Domain_Value_Definition: debris slide
Enumerated_Domain:
Enumerated_Domain_Value: ef
Enumerated_Domain_Value_Definition: earth flow
Enumerated_Domain:
Enumerated_Domain_Value: rf
Enumerated_Domain_Value_Definition: rockfall
Enumerated_Domain:
Enumerated_Domain_Value: sl
Enumerated_Domain_Value_Definition: slump
Enumerated_Domain:
Enumerated_Domain_Value: tn
Enumerated_Domain_Value_Definition: translational feature
Enumerated_Domain:
Enumerated_Domain_Value: NULL
Enumerated_Domain_Value_Definition: no feature
Attribute:
Attribute_Label: METHOD
Attribute_Definition: Mapping method
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: field
Enumerated_Domain_Value_Definition: Mapped from field reconnaisance
Enumerated_Domain:
Enumerated_Domain_Value: photo
Enumerated_Domain_Value_Definition: Mapped from aerial photographs
Overview_Description:
Entity_and_Attribute_Overview:
The attributes characterize the style of the feature (STYLE) and method of mapping (METHOD).
Distribution_Information:
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 2.473
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:
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.7.3 on Wed Dec 05 14:36:08 2001