SIR2012_5290_ACAD_Potentialbarriers

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

U.S. Geological Survey, Maine Water Science Center, Augusta, Maine

Publication_Date: 2012

Title: SIR2012_5290_ACAD_Potentialbarriers

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Augusta, Maine

Publisher: U.S. Geological Survey

Online_Linkage: <http://pubs.usgs.gov/sir/2012/5290/>

Description:

Abstract:

This layer shows landforms that are potential barriers to the horizontal migration of salt marshes in and around Acadia National Park (ANP), Maine. Landforms that are potential barriers to the migration of salt marshes include roads and railroad grades in this study area. Any artificial landform that intersected land that could be inundated with a sea level rise of 60 cm (+/- the 26 cm 95-percent confidence interval used in this study) was considered a potential barrier to marsh migration. The study did not attempt to distinguish between roads that had water passage (culverts) and those that did not, because the specific elevation and size of the culvert would ultimately determine how much of a barrier any given landform would present.

Purpose:

Landforms that are potential barriers to the horizontal migration of salt marshes in and around Acadia National Park are potentially important in the analysis of the future viability of saltmarshes. Roads and railroad grades both may act as potential barriers. The potential barriers to migration of salt marshes in and around ANP were developed using the inundation lines for salt marshes with 60 cm of sea level rise, and a shaded-relief image of the LiDAR data on which the inundation lines were based. Aerial photographs (Low Tide orthophotos 2008, and Bing maps) were also used to delineate and identify potential barriers. The polylines are simply a graphical representation of a barrier (a road or railroad grade) that could be in the path of the rising sea. The lengths are somewhat aribtrary, and are just meant to show in general where the landform could impede water movement.

Supplemental_Information:

Geodatabase product of a U.S. Geological Survey study funded by National Park Service Climate Change Response funding, NPS PMIS # 161531, "Inventory and Protection of Salt Marshes from Risks of Sea Level Rise at Acadia National Park, Maine", 2012.
The database layers are collectively termed "appendix 1" of the USGS SIR report. Database layers included in appendix 1 include: Surveyed benchmarks used in surveying exercise (SIR2012_5290_ACAD_SurveyedBMs); Surveyed marsh points used for quality control for LiDAR data (SIR2012_5290_ACAD_Surveyedmarshpoints); Surveyed elevation reference marks for each surveyed marsh (SIR2012_5290_ACAD_SurveyedERMs); Salt marshes inventoried for this study (SIR2012_5290_ACAD_Saltmarshpolys); Inundation lines for each marsh under 60 cm of sea level rise (SIR2012_5290_ACAD_Inundationlines); Potential barriers to migration of salt marshes (SIR2012_5290_ACAD_Potentialbarriers).
The inundation lines presented are in no way a prediction of whether marsh migration will actually occur, only indications of where land will be inundated and would therefore be available for migration under 60 cm. of sea level rise.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2010

Currentness_Reference:

Data were developed based on LiDAR topographic data collected in the fall of 2010. Changes to landforms since that time are not represented.

Status:

Progress: Complete

Maintenance_and_Update_Frequency: No maintenance or update is planned.

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -68.786498

East_Bounding_Coordinate: -68.002430

North_Bounding_Coordinate: 44.574048

South_Bounding_Coordinate: 44.147056

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Categories

Theme_Keyword: elevation

Theme_Keyword: coasts

Theme_Keyword: environment

Theme_Keyword: transportation

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Maine

Place_Keyword: Mount Desert Island

Place_Keyword: Acadia National Park

Place_Keyword: Penobscot Bay

Place_Keyword: Schoodic Peninsula

Place_Keyword: Swans Island

Place_Keyword: Hancock County

Place_Keyword: Knox County

Access_Constraints: None.

Use_Constraints:

No legal use constraints. Users must assume responsibility in determining the usability of these data for their purposes.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Martha G. Nielsen

Contact_Organization: U.S. Geological Survey, Maine Water Science Office

Contact_Address:

Address_Type: mailing and physical

Address: 196 Whitten Rd.

City: Augusta

State_or_Province: Maine

Postal_Code: 04330

Contact_Voice_Telephone: 207-622-8201 x116

Contact_Facsimile_Telephone: 207-622-8204

Contact_Electronic_Mail_Address: mnielsen@usgs.gov

Data_Set_Credit:

Produced in cooperation with the National Park Service. Funding provided by the National Park Service. LiDAR data for the Northeast funded largely by USGS American Reinvestment and Recovery Act funds, and provided by the Maine Office of GIS. Acknowledgment of the U.S. Geological Survey and the National Park Service would be appreciated in products derived from these data.

Native_Data_Set_Environment:

Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.4.4000

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The potential barriers were idenditified based only on remotely-sensed data and no attempt was made to ground-truth the data. Information on the type of barrier (road or railroad grade) was gathered from aerial photos, and was checked for each entity. Information on whether the potential barrier has any association with Acadia National Park, its properties, or properties of its conservation partners was gathered from a) GIS datasets of the park boundaries, and b) conversations with Park staff and staff of conservation partners working with the park (primarily Maine Coast Heritage Trust). No warranty is made concerning these attributions.

Logical_Consistency_Report: Data are internally consistent.

Completeness_Report: The data are complete.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The locations are based on very-high resolution aerial photographs and topographic data. Locations of roadways and railroad grades is accurate to within +/- 5 meters.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report: Elevations not determined.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey

Publication_Date: 12/1/2011

Title: LiDAR Data for the Northeast

Geospatial_Data_Presentation_Form:

raster tiles, 2 meter cell size, each tile is 751x751 cells in size (1.5 km x 1.5 km).

Other_Citation_Details:

The LiDAR data have a grid cell size of 2 m. Individual data tiles are 751x751 grid cells (1.5 km x 1.5 km) in size.
As of October 2012, the LiDAR data are still availably only from state GIS offices. Final publication for public download has not been announced.

Source_Scale_Denominator: 2400

Type_of_Source_Media: External hard drive

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20111001

Ending_Date: 20111230

Source_Currentness_Reference: Data are current as of 2012.

Source_Citation_Abbreviation: LiDAR data

Source_Contribution:

The LiDAR data were used to identify location/shape of potential barriers to migration of salt marshes. A shaded-relief image of tiles that were merged together (using the ArcGIS "mosaic" tool) was used in this process.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Maine Office of GIS

Publication_Date: 2009

Title: Low Tide orthophotos 2008.

Online_Linkage:

<http://geolibportal.usm.maine.edu/geonetwork/srv/en/metadata.show?id=502>

Source_Scale_Denominator: 2400

Type_of_Source_Media: online

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20080821

Source_Currentness_Reference: flight date

Source_Citation_Abbreviation: LT 2008

Source_Contribution:

Low-tide orthophotos from 2008 were used to help identify the potential barriers to migration. They were also used to identify the type of barrier (road or railroad grade).

Process_Step:

Process_Description:

Creation of tile mosaics of the LiDAR data for use as background images and datasets. The LiDAR data exist in small (1.5 km x 1.5 km) tiles. They were combined using the ArcGIS Mosaic tool into larger pieces at the same resolution (2 m cell size). These mosaics were used to create shaded relief images of the topography.

Process_Date: 2011

Process_Step:

Process_Description:

Creation of shaded relief images from the LiDAR data. Large mosaicked tiles were processed to create shaded relief images of the topography. The ArcGIS hillshade tool was used to create these images with the same grid size (2 m) as the original input data.

Process_Date: 2011

Process_Step:

Process_Description:

Once the shaded relief image of the LiDAR data was created, the inundation lines layer (insert formal title here) was plotted over the shaded relief image for each salt marsh in the salt marshes inventory polygon layer (insert formal title here). If the inundation lines showed that, absent any physical barrier, water would move inland on the other side of any roadway or other manmade topographic feature, a line was digitized representing that manmade topographic feature. This process was repeated for each salt marsh in the salt marshes inventory set of polygons. Each potential barrier line was given a "type" label, which was determined based on the aerial photos (2008 low tide photos) and the shaded relief of the LIDAR data.

Process_Date: 2012

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: String

Point_and_Vector_Object_Count: 41

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: NAD_1983_UTM_Zone_19N

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996

Longitude_of_Central_Meridian: -69.0

Latitude_of_Projection_Origin: 0.0

False_Easting: 500000.0

False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.0001

Ordinate_Resolution: 0.0001

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: D North American 1983

Ellipsoid_Name: GRS 1980

Semi-major_Axis: 6378137.0

Denominator_of_Flattening_Ratio: 298.257222101

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: North_American_Vertical_Datum_1988

Altitude_Resolution: 1.0

Altitude_Distance_Units: Meters

Altitude_Encoding_Method: Attribute values

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: ploylines

Entity_Type_Definition: Potential barriers to saltmarsh migration

Entity_Type_Definition_Source: USGS

Attribute:

Attribute_Label: Shape_Length

Attribute_Definition: Length of features in internal units

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated

Attribute:

Attribute_Label: ANP_Association

Attribute_Definition: Indicates the ownership of the adjacent saltmarsh

Attribute_Definition_Source: USGS

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: private

Enumerated_Domain_Value_Definition: Privately held

Enumerated_Domain_Value_Definition_Source: USGS

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: ANP

Enumerated_Domain_Value_Definition:

Owned or otherwise protected by Acadia National Park (such as by a conservation easement).

Enumerated_Domain_Value_Definition_Source: USGS

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Partner

Enumerated_Domain_Value_Definition: Protected by a conservation partner of Acadia National Park

Enumerated_Domain_Value_Definition_Source: USGS

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: State

Enumerated_Domain_Value_Definition: Protected by the State of Maine (Holbrook Island Sanctuary).

Enumerated_Domain_Value_Definition_Source: USGS

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature Geometry

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining features

Attribute:

Attribute_Label: Type

Attribute_Definition: Type of artificial landform mapped

Attribute_Definition_Source: USGS

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: road

Enumerated_Domain_Value_Definition: Barrier landform is a road, driveway, lane, etc.

Enumerated_Domain_Value_Definition_Source: USGS

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: railroad grade

Enumerated_Domain_Value_Definition: barrier landform is a railroad grade

Enumerated_Domain_Value_Definition_Source: USGS

Attribute:

Attribute_Label: OBJECTID

Attribute_Definition: Internal feature number

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated

Overview_Description:

Entity_and_Attribute_Overview:

The Potential Barriers to Salt Marsh Migration layer contains lines representing the physical location of manmade topographic features that may present an obstacle to the migration of a salt marsh when sea level rises 60 cm. Whether or not the feature presents an actual obstacle depends on the location and function of water passage routes such as bridges and/or culverts.
The Attribute Table for this layer contains the following items: OBJECTID -- Internal feature number Shape -- Feature Geometry Type -- Type of artificial landform mapped (road or railroad grade) Shape_Length -- Length of features in internal units (meters) ANP_Association -- Indicates the ownership of the adjacent saltmarsh: "Partner" = A conservation partner of Acadua National Park (ANP) owns the land "Yes" = ANP owns the land "no" = privately held, no association with ANP

Entity_and_Attribute_Detail_Citation: none

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Position: Ask USGS -- Water Webserver Team

Contact_Address:

Address_Type: mailing address

Address: 445 National Center

City: Reston

State_or_Province: VA

Postal_Code: 20192

Country: USA

Contact_Voice_Telephone: 1-888-275-8747 (1-888-ASK-USGS)

Contact_Electronic_Mail_Address: <http://water.usgs.gov/user_feedback_form.html>

Resource_Description: Downloadable Data

Distribution_Liability:

Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials. The use of firm, trade, or brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey. The names mentioned in this document may be trademarks or registered trademarks of their respective trademark owners.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ESRI File Geodatabase datalayer

Format_Information_Content: Compressed folder

File_Decompression_Technique: Winzip

Transfer_Size: 31000

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

<http://pubs.usgs.gov/sir/2012/5290/data/SIR2012_5290_ACAD_SaltmarshSLRLayers.gdb.zip>

Access_Instructions:

Compressed folder of geodatabase may be downloaded at <http://pubs.usgs.gov/sir/2012/5290> by following the instructions. Metadata are available for download separately, but also are included in the geodatabase folder. The geodatabase includes all the datalayers together for this report; they are not available separately.

Fees: None. This dataset is provided by USGS as a public service.

Metadata_Reference_Information:

Metadata_Date: 20121220

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, New England Water Science Center, Maine Office

Contact_Person: Martha Nielsen / Robert Dudley

Contact_Position: Hydrologist

Contact_Address:

Address_Type: mailing address

Address: 196 Whitten Rd.

City: Augusta

State_or_Province: ME

Postal_Code: 04330

Country: USA

Contact_Voice_Telephone: 207-622-8201

Contact_Electronic_Mail_Address: mnielsen@usgs.gov

Contact_Electronic_Mail_Address: rwdudley@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998