EAARL Topography-Cape Cod National Seashore

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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
Publication_Date: 2007
Title: EAARL Topography-Cape Cod National Seashore
Series_Information:

Series_Name: Open File Report
Issue_Identification: 2007-1375

Publication_Information:

Publication_Place: St. Petersburg, FL
Publisher: USGS

Other_Citation_Details:

The United States Geological Survey, FISC St. Petersburg, in cooperation with the National Park Service (NPS) and the National Aeronautics and Space Administration (NASA), is to provide the coastal management community with usable, useful digital elevation products. The USGS processes aircraft lidar data (provided by NASA), develops software tools and algorithms to use and analyze the data and make products available to the coastal management community through a variety of media, including the internet, CD-ROMs, DVDs and data reports.

Online_Linkage: http://pubs.usgs.gov/of/2007/1375/start.html

Description:

Abstract:

Elevation maps (also known as Digital Elevation Models or DEMs) of Cape Cod National Seashore were produced from remotely-sensed, geographically-referenced elevation measurements in cooperation with NASA and NPS. Point data in ascii text files were interpolated in a GIS to create a grid or digital elevation model (DEM) of each beach surface. Elevation measurements were collected in Massachusetts, over Cape Cod National Seashore using the NASA Experimental Advanced Airborne Research LiDAR (EAARL), a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The system uses high frequency laser beams directed at the earth's surface through an opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The plane travels over the beach at approximately 60 meters per second while surveying from the low-water line to the landward base of the sand dunes. The EAARL, developed by the National Aeronautics and Space Administration (NASA) located at Wallops Flight Facility in Virginia, measures ground elevation with a vertical resolution of 15 centimeters. A sampling rate of 3 kHz or higher results in an extremely dense spatial elevation data set. Over 100 kilometers of coastline can be easily surveyed within a 3- to 4-hour mission time period. The ability to sample large areas rapidly and accurately is especially useful in morphologically dynamic areas such as barrier beaches. Quick assessment of topographic change can be made following storms comparing measurements against baseline data. When subsequent elevation maps for an area are analyzed, they provide a useful tool to make management decisions regarding coastal development.
For more information on Lidar science and the Experimental Advanced Airborne Research Lidar (EAARL) system and surveys, see http://ngom.usgs.gov/dsp/overview/index.php and http://ngom.usgs.gov/dsp/tech/eaarl/index.php .

Purpose:

One goal of the project is to produce highly detailed and accurate digital elevation maps of National Seashores and coastal parks for use as a management tool and to make these maps available to natural resource managers within the parks.

Supplemental_Information:

Raw Lidar data is not in a format that is generally usable by National Park Service resource managers and scientists for scientific analysis. Converting dense Lidar elevation data into a readily usable format without loss of essential information requires specialized processing. The USGS converts raw Lidar data into a GIS-compatible map product to be provided to Park Service GIS specialists, managers, and scientists. The primary tool used in the conversion process is Airborne Lidar Processing System (ALPS), a multitiered processing system developed by a USGS/NASA collaborative for the use of topographic Lidar in coastal change assessment. Specialized processing algorithms are used to convert raw waveform Lidar data acquired by the EAARL to georeferenced spot (x,y,z) returns for "first surface" and "bare earth" topography. These data are then converted to the NAD83 horizontal and NAVD88 vertical datum (using the Geoid 99 model). The final products are 2x2-km map tiles written out in a standard geotiff format with associated metadata information. These tiles are created for visual interpretation and regional quantitative analysis. Metadata files include the standard FGDC format.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20050504

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: Unknown

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -80.205183
East_Bounding_Coordinate: -80.104639
North_Bounding_Coordinate: 25.4769585
South_Bounding_Coordinate: 25.313834

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:9c3d479e-003b-43b7-8b91-adf2ad0c12dd

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: Lidar
Theme_Keyword: Experimental Advanced Airborne Research Lidar
Theme_Keyword: digital elevation model
Theme_Keyword: elevation change
Theme_Keyword: laser altimetry
Theme_Keyword: derived surface
Theme_Keyword: resource management
Theme_Keyword: bare earth elevation
Theme_Keyword: ALPS
Theme_Keyword: Airborne Lidar Processing System

Theme:

Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: distributions
Theme_Keyword: bathymetry and elevation

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) Keywords
Theme_Keyword: altimetry
Theme_Keyword: topographic mapping

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: LIDAR
Theme_Keyword: topography
Theme_Keyword: digital elevation models

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: Cape Cod National Seashore
Place_Keyword: Atlantic Coast
Place_Keyword: Massachusetts
Place_Keyword: United States East Coast

Stratum:

Stratum_Keyword_Thesaurus: None
Stratum_Keyword: Bare earth topography

Temporal:

Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 20050504

Access_Constraints:

Any use of these data signifies a user's agreement to comprehension and compliance of the USGS Standard Disclaimer. Ensure all portions of metadata are read and clearly understood before using these data in order to protect both user and USGS interests. See section 6.3 Distribution Liability.

Use_Constraints:

Although the USGS is making these data sets available to others who may find the data of value, the USGS does not warrant, endorse, or recommend the use of these data setse for any given purpose. The user assumes the entire risk related to the use of these data. These data sets are not for navigational purposes. The USGS is providing these data "as is", and the USGS disclaims any and all warranties, whether expressed or implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose. In no event will the USGS be liable to you or to any third party for any direct, indirect, incidental, consequential, special, or exemplary damages or lost profits resulting from any use or misuse of these data.Acknowledgement of the U.S. Geological Survey, FISC St. Petersburg office, as a data source would be appreciated in products developed from these data, and such acknowledgement as is standard for citation and legal practices for data source is expected by users of this data. Sharing new data layers developed directly from these data would also be appreciated by the USGS staff. Users should be aware that comparisons with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in photo interpretation, mapping conventions, and digital processes over time. These data are not legal documents and are not to be used as such.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: United States Geological Survey, FISC St. Petersburg
Contact_Person: Dr. John C. Brock

Contact_Position: Physical Oceanographer
Contact_Address:

Address_Type: mailing and physical address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: 727 803-8747 ext3088
Contact_Facsimile_Telephone: 727 803-2031
Contact_Electronic_Mail_Address: jbrock@usgs.gov
Hours_of_Service: Monday-Friday, 8-5, EST

Browse_Graphic:

Browse_Graphic_File_Name:

http://pubs.usgs.gov/of/2007/1375/HTML/images/CACO_Tile_inset2.gif

Browse_Graphic_File_Description: EAARL Topography - Cape Cod National Seashore
Browse_Graphic_File_Type: GIF

Data_Set_Credit:

The USGS FISC St. Petersburg office, would like to acknowledge NASA Goddard Space Flight Center and the National Park Service for their cooperation and assistance in the development of the data. The USGS would also like to acknowledge park management and personnel at Cape Cod National Seashore.

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcMap 9.1.0.722; ERDAS Imagine 8.7; ESRI ArcCatalog 9.1.0.722

Cross_Reference:

Citation_Information:

Originator:

Brock, J.C.; Wright, C.W.; Sallenger, A.H; Krabill, W.B., and Swift, R.N

Publication_Date: 2002
Title:

Basis and Methods of NASA Ariborne Topographic Mapper Lidar Surveys for Coastal Studies

Geospatial_Data_Presentation_Form: journal article
Series_Information:

Series_Name: Journal of Coastal Research
Issue_Identification: Vol. 18, No. 1, pp.1-13

Publication_Information:

Publication_Place: West Palm Beach, FL
Publisher: Journal of Coastal Research

Cross_Reference:

Citation_Information:

Originator: John Brock and Asbury Sallenger, US Geological Survey
Publication_Date: 2001
Title:

Airborne Topographic Lidar Mapping for Coastal Science and Resource Management

Geospatial_Data_Presentation_Form: USGS Open File Report
Publication_Information:

Publication_Place: St. Petersburg, FL
Publisher: US Geological Survey

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The expected accuracy of the measured variables is as follows: attitude within 0.07 degree, 3-cm nominal ranging accuracy, and verticle elevation accuracy of +/- 15cm (bare earth). Quality checks are built into the data-processing software.

Logical_Consistency_Report:

Each file contains data located in a 2-km by 2-km tile, where the upper-left bound can be assessed quickly through the file name. The first 3 numbers in the file name represent the left-most UTM easting coordinate (e###000) in meters, the next 4 numbers represent the top-most UTM northing coordinate (n####000) in meters, and the last 2 numbers (##) represent the UTM zone in which the tile is located (for example, ba_e123_n4567_20).

Completeness_Report:

Several regions of the dataset are labeled as "No Data", which corresponds to a cell value of -100 m in the GeoTiff file. These "No Data" areas are a result of the survey not covering a particular region, optical water depth of greater than 1.5 Secchi disc depths, or the manual removal of lidar processing artifacts.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Raw elevation measurements have been determined to be within 1.5 meter horizontal accuracy. Processing steps (grid interpolation) may introduce additional error which has not been tested at the time of this publication.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Elevations of the DEM are vertically consistent with the point elevation data, +/- 15cm.

Lineage:

Process_Step:

Process_Description:

The data are collected using a Cessna 310 aircraft. The NASA Experimental Advanced Airborne Research Lidar (EAARL) laser scanner collects the data using a green (532nm) raster scanning laser, while a digital camera acquires a visual record of the flight. The data are stored on hard drives and archived at the USGS FISC St. Petersburg office and the NASA Wallops office. The navigational data are processed at Wallops. The navigational and raw data are then downloaded into the Airborne Lidar Processing System (ALPS). Data are converted from units of time to x,y,z points for elevation. The derived surface data can then be converted into raster data (geotiffs).

Process_Date: 20050504
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: United States Geological Survey, FISC St. Petersburg
Contact_Person: Amar Nayegandhi

Contact_Position: Computer Scientist
Contact_Address:

Address_Type: mailing and physical address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: 727-803-8747
Hours_of_Service: 8:00am to 5:00pm Monday thru Friday, EST
Contact_Instructions: Call Survey for Details

Process_Step:

Process_Description:

The raster dataset was opened in ERDAS IMAGINE for editing. An Area of Interest (AOI) polygon was drawn around regions of poor data quality. Poor data quality was determined visually by locating gaps in the data as well as artifacts (e.g. spikes, large facets) of the Lidar processing. Pixels within the AOI polygons were given a raster value of -100 to correspond with the classification of 'No Data'

Process_Date: 20070101
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: United States Geological Survey, FISC St. Petersburg

Contact_Address:

Address_Type: mailing and physical address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: 727-803-8747
Hours_of_Service: 8:30-5:00 M-F EST

Process_Step:

Process_Description: Metadata imported into ArcCatalog from XML file.
Process_Date: 20070501
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: United States Geological Survey, FISC St. Petersburg

Contact_Address:

Address_Type: mailing and physical address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: 727 803-8747
Hours_of_Service: 8:30-5:00 M-F EST

Process_Step:

Process_Description:

Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog.

Process_Date: 20170124
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Alan O. Allwardt

Contact_Position: Contractor -- Information Specialist
Contact_Address:

Address_Type: mailing and physical address
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-460-7551
Contact_Facsimile_Telephone: 831-427-4748
Contact_Electronic_Mail_Address: aallwardt@usgs.gov

Process_Step:

Process_Description:

Added keywords section with USGS persistent identifier as theme keyword.

Process_Date: 20201013
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross

Contact_Position: Marine Geologist
Contact_Address:

Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598

Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:

Raster_Object_Type: Pixel
Row_Count: 2000
Column_Count: 2000
Vertical_Count: 1

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:

UTM_Zone_Number: 19
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -69.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:

Abscissa_Resolution: 1.000000
Ordinate_Resolution: 1.000000

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: .15
Altitude_Distance_Units: meters
Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

The attributes measured are as follows: variables measured by EAARL - distance between aircraft and GPS satellites (m), attitude information (roll, pitch, heading in degrees), scan angle (degrees), second of the epoch (sec), 1-ns time-resolved return intensity waveform (digital counts), and co-registered digital aerial photography. For derived variables, WGS84, NAD83 or other UTM eastings and northings (m), NAVD88 elevations (m), and peak amplitude (intensity). For derived surfaces, bare-earth elevations, and first-return elevations.

Entity_and_Attribute_Detail_Citation:

This Digital Elevation Model is a Geotiff derived from point data referenced to WGS84, NAD83 UTM eastings and northings (m). The variables measured by EAARL are: distance between aircraft and GPS satellites (m), attitude information (roll, pitch, heading in degrees), scan angle (degrees), second of the epoch (sec), and 1-ns time-resolved return intensity waveform (digital counts). It is raster data consisting of cells. Each cell has an elevation value associated with it. Cell size is 1 meter by 1 meter.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: United States Geological Survey, FISC St. Petersburg

Contact_Address:

Address_Type: mailing and physical address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: 727-803-8747
Hours_of_Service: 8:30-5:00 M-F EST
Contact_Instructions: Call USGS for Details

Resource_Description: OFR_2007-1375
Distribution_Liability:

Neither the United States Geological Survey nor the National Park Service shall be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics 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 were 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 United States Geological Survey 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 a USGS server and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on a computer system at the United States Geological Survey, no warranty expressed or implied is made regarding the utility of the data on another system or 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: TIFF

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: http://pubs.usgs.gov/of/2007/1375/HTML/raw_data.html

Access_Instructions: Data can be downloaded via the World Wide Web (WWW)

Offline_Option:

Offline_Media: DVD-ROM
Recording_Format: DVD-ROM

Fees: Vary
Ordering_Instructions: Call USGS for details

Custom_Order_Process: Call USGS for Details
Available_Time_Period:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20050504

Metadata_Reference_Information:

Metadata_Date: 20211109
Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

United States Geological Survey, St. Petersburg Coastal and Marine Science Center

Contact_Person: SPCMSC Data Management Group

Contact_Address:

Address_Type: mailing and physical address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: Florida
Postal_Code: 33701
Country: US

Contact_Voice_Telephone: 727-502-8000
Contact_Electronic_Mail_Address: gs-g-spcmsc_data_inquiries@usgs.gov

Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://cmgds.marine.usgs.gov/catalog/spcmsc/of2007-1375metadata.html>