Overwash produced by the Thanksgiving nor'easter (22-23 November 2006) on the North End of Assateague Island

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Assateague Island National Seashore
Publication_Date: 20061219
Title:
Overwash produced by the Thanksgiving nor'easter (22-23 November 2006) on the North End of Assateague Island
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: http://science.nature.nps.gov/nrdata
Description:
Abstract:
Assateague Island is a barrier island subject to forces that dynamically alter the physical and biotic properties of the island. Storms are a major driver of change, causing shoreline erosion and often shaping interior island characteristics through overwash events. A nor'easter over the Thanksgiving holiday (22-23 November) produced strong wind and waves which caused overwash along the island.  Several areas overwashed across the constructed storm berm.  This dataset contains elevations of overwash areas on the northend of Assateague Island shortly after this storm passed.  All overwash areas on the constructed berm were surveyed.  Horizontal and vertical position was determined with a Trimble 5700 RTK GPS total station on 7 September 2006.
Purpose:
The purpose of this data set is to show the effects of overwash on the island and how rapidly this can reshape the shore. The dynamic nature of coastal barriers such as Assateague Island is a defining characteristic, influencing nearly every aspect of their ecology. Fundamentally disturbance driven systems, barrier islands and their endemic biota are continually shaped by physical forces on a time scale vastly accelerated in comparison to mainland systems. Because of the rapid pace and scope of change, long term monitoring is crucial towards understanding natural barrier island conditions as well as anthropogenic influences.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20061129
Currentness_Reference:
ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -75.125981
East_Bounding_Coordinate: -75.116656
North_Bounding_Coordinate: 38.281432
South_Bounding_Coordinate: 38.263961
Keywords:
Theme:
Theme_Keyword_Thesaurus: Assateague Island National Seashore Keyword Thesaurus
Theme_Keyword: Geomorphology
Theme_Keyword: Beach Dynamics
Theme_Keyword: Coastal Dynamics
Theme_Keyword: Overwash
Theme_Keyword: Storms
Theme:
Theme_Keyword_Thesaurus: National Park Service Theme Category Thesaurus
Theme_Keyword: Physical
Theme_Keyword: Landscape
Theme_Keyword: Water
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: environment
Place:
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: North America
Place_Keyword: Maryland
Place_Keyword: Worcester County
Place_Keyword: Assateague Island National Seashore
Place:
Place_Keyword_Thesaurus: National Park System Unit Name Thesaurus
Place_Keyword: Assateague Island National Seashore
Place:
Place_Keyword_Thesaurus: National Park System Unit Code Thesaurus
Place_Keyword: ASIS
Access_Constraints: None
Use_Constraints:
None
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Assateague Island National Seashore
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address:
7206 National Seashore Lane
City: Berlin
State_or_Province: Maryland
Postal_Code: 21811
Country: United States
Contact_Voice_Telephone: 410-641-1443
Contact_Facsimile_Telephone: 410-641-1099
Contact_Electronic_Mail_Address: asis_gis@nps.gov
Hours_of_Service: Mon thru Fri 0900 - 1600
Data_Set_Credit:
Andrew Roach
Security_Information:
Security_Classification_System: none
Security_Classification: Unclassified
Security_Handling_Description: none
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Attributes are accurate as recorded and as reported after processing in Trimble Geomatics Office.
Logical_Consistency_Report:
Topology is consistent and clean.
Completeness_Report:
The data set is complete for overwash areas of interest.  Other overwash areas occurred on Assateague Island during this storm, however all overwash areas were not surveyed.  All overwash areas on and in the vicinity of the constructed storm berm were surveyed.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
<= 0.15 m
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
<= 0.20 m
Lineage:
Process_Step:
Process_Description:
Areas of overwash were surveyed when weather and ground conditions became favourable.  A Trimble RTK 5700 GPS total station was used to record horizontal and vertical position.  The base station, with a Trimble Zephyr Geodetic antenna and Trimmark III radio was setup on GPS 3 (immediately north of the constructed storm berm).  The rover receiver was a Trimble 5700 receiver with Zephyr antenna.

Four overwash areas on the constructed berm were surveyed.  A point was collected every 5 seconds as the rover was moved in the center of the overwash channel, along the edge of the channle, or along a shore-perpendicular profile.  Points were collected at the center of the overwash channel, along the edges of the channel, at significant elevations within the overwash area, and across a short cross-island profile through the overwash area.  The profile was collected generally perpendiular to the shoreline running through the primary overwash channel and fan.
Process_Date: 20061129
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Assateague Island National Seashore
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address:
7206 National Seashore Lane
City: Berlin
State_or_Province: MD
Postal_Code: 21811
Country: USA
Contact_Voice_Telephone: 410-649-1443
Contact_Facsimile_Telephone: 410-641-1099
Hours_of_Service: Mon thru Fri 0900 - 1600
Process_Step:
Process_Description:
Data was imported into Trimble Geomatics Office.  Attributes and positional information was checked for accuraccy and completeness.

Data and attributes were exported as a .txt file.
Process_Date: 20061130
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Assateague Island National Seashore
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address:
7206 National Seashore Lane
City: Berlin
State_or_Province: Maryland
Postal_Code: 21811
Country: USA
Contact_Voice_Telephone: 410-641-1443
Contact_Facsimile_Telephone: 410-641-1099
Contact_Electronic_Mail_Address: ASIS_GIS@nps.gov
Hours_of_Service: 0900-1630 M-F
Process_Step:
Process_Description:
Data was converted to a shapefile in ArcCatalog.
Process_Date: 20061130
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Assateague Island National Seashore
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address:
7206 National Seashore Lane
City: Berlin
State_or_Province: Maryland
Postal_Code: 21811
Country: USA
Contact_Voice_Telephone: 410-641-1443
Contact_Facsimile_Telephone: 410-641-1099
Contact_Electronic_Mail_Address: ASIS_GIS@nps.gov
Hours_of_Service: 0900-1630 M-F
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
C:\ASIS_GIS_Projects\Overwash_elev\Fall06\asis_overwash_20060907.shp.xml
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Assateague Island National Seashore
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address:
7206 National Seashore Lane
City: Berlin
State_or_Province: MD
Postal_Code: 21811
Country: USA
Contact_Voice_Telephone: 410-641-1443
Contact_Facsimile_Telephone: 410-641-1099
Contact_Electronic_Mail_Address: asis_gis@nps.gov
Hours_of_Service: 0900-1600 M-F
Process_Step:
Process_Description:
Dataset copied.
Source_Used_Citation_Abbreviation:
C:\ASIS_GIS_Projects\Overwash_elev\Fall06\asis_overwash_20061129
Cloud_Cover: none
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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: 1066
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 18
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -75.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000
Ordinate_Resolution: 0.000000
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
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988
Altitude_Resolution: 0.01 m
Altitude_Distance_Units: meters
Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: asis_overwash_20061129
Entity_Type_Definition:
Overwash on Assateague Island National Seashore in 2004
Entity_Type_Definition_Source:
ASIS
Attribute:
Attribute_Label: MinSats
Attribute_Definition:
Minimum Number of Sattellites during observation
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5
Range_Domain_Maximum: 8
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: HorPrec
Attribute_Definition:
Horizontal Precision
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.004
Range_Domain_Maximum: 0.032
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: VertPrec
Attribute_Definition:
Vertical Precision
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.008
Range_Domain_Maximum: 0.063
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Code
Attribute_Definition:
Field entered code
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: center
Enumerated_Domain_Value_Definition:
point in the center of the overwash channel
Enumerated_Domain:
Enumerated_Domain_Value: edge
Enumerated_Domain_Value_Definition:
Edge of overwash channel
Enumerated_Domain:
Enumerated_Domain_Value: dry
Enumerated_Domain_Value_Definition:
Dry, high area in the overwash area
Enumerated_Domain:
Enumerated_Domain_Value: profile
Enumerated_Domain_Value_Definition:
Shore-perpendicular profile point
Attribute:
Attribute_Label: Shape
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Attribute:
Attribute_Label: Northing
Attribute_Definition:
Northing
Attribute_Domain_Values:
Unrepresentable_Domain:
Northing
Attribute_Value_Accuracy_Information:
Attribute_Value_Accuracy: 0.01 m
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: RMS
Attribute_Definition:
Root Mean Square
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.001
Range_Domain_Maximum: 0.007
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Elev
Attribute_Definition:
Elevation
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.570
Range_Domain_Maximum: 2.439
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Name
Attribute_Definition:
point name
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential numbering. #(notch # or overwash #)n(notch if notch)ow(overwash)#(sequential number)
Attribute:
Attribute_Label: EllipHt
Attribute_Definition:
Height above the ellipsoid
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -35.518
Range_Domain_Maximum: -33.633
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Easting
Attribute_Definition:
Easting
Attribute_Domain_Values:
Unrepresentable_Domain:
Easting
Attribute_Value_Accuracy_Information:
Attribute_Value_Accuracy: 0.01 m
Attribute:
Attribute_Label: HorQ
Attribute_Definition:
Horizontal Quality
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Survey Quality
Enumerated_Domain_Value_Definition:
Meets survey quality requirements
Enumerated_Domain_Value_Definition_Source:
TGO
Attribute:
Attribute_Label: EllipHtQ
Attribute_Definition:
Ellipsoid Height Quality
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Survey Quality
Enumerated_Domain_Value_Definition:
meets survey quality requirements
Enumerated_Domain_Value_Definition_Source:
TGO
Attribute:
Attribute_Label: AntHt
Attribute_Definition:
Rover Antenna Height
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2.00
Range_Domain_Maximum: 2.00
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: StarTime
Attribute_Definition:
Start Time
Attribute_Domain_Values:
Unrepresentable_Domain:
Occupartion start time
Attribute:
Attribute_Label: StopTime
Attribute_Definition:
Stop Time
Attribute_Domain_Values:
Unrepresentable_Domain:
Occupartion stop time
Attribute:
Attribute_Label: GPSPos
Attribute_Definition:
Number of GPS positions taken and averaged
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 1
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: HDatum
Attribute_Definition:
Horizontal Datum
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NAD 1983
Enumerated_Domain_Value_Definition:
North American Datum 1983
Attribute:
Attribute_Label: VDatum
Attribute_Definition:
Vertical Datum
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NAVD88
Enumerated_Domain_Value_Definition:
North American Vertical Datum 1988
Attribute:
Attribute_Label: Geoid
Attribute_Definition:
Geoid used
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ASIS03
Enumerated_Domain_Value_Definition:
Subset of GEOID03 created for the area surrounding Assateague Island
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Assateague Island National Seashore
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address:
7206 National Seashore Lane
City: Berlin
State_or_Province: Maryland
Postal_Code: 21811
Country: United States
Contact_Voice_Telephone: 410-641-1443
Contact_Facsimile_Telephone: 410-641-1099
Contact_Electronic_Mail_Address: asis_gis@nps.gov
Hours_of_Service: Mon thru Fri 0900 - 1600
Resource_Description: Downloadable Data
Distribution_Liability:
The National Park Service shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics (i.e. "GIF or JPG" format files) are not legal documents and are not intended to be used as such. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they are derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. The related graphics are intended to aid the data user in acquiring relevant data; it is not appropriate to use the related graphics as data. The National Park Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from an NPS server and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on computer systems at the National Park Service, no warranty expressed or implied is made regarding the utility of the data on other systems for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: shp
Transfer_Size: 0.029
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://nrdata.nps.gov/ASIS/ASISDATA/asis_overwash_20061129.zip
Fees: none
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20061129
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Metadata_Reference_Information:
Metadata_Date: 20070828
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Assateague Island National Seashore
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address:
7206 National Seashore Lane
City: Berlin
State_or_Province: Maryland
Postal_Code: 21811
Country: United States
Contact_Voice_Telephone: 410-649-1443
Contact_Facsimile_Telephone: 410-649-1099
Contact_Electronic_Mail_Address: asis_gis@nps.gov
Hours_of_Service: Mon thru Fri 0900 - 1600
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: none
Metadata_Use_Constraints:
none
Metadata_Extensions:
Online_Linkage: http://nrdata.nps.gov/profiles/nps_profile.xml
Profile_Name: NPS Metadata Profile
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
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