Metadata: Identification_Information: Citation: Citation_Information: Originator: Kara S. Doran Originator: Justin J. Birchler Originator: Joseph W. Long Originator: Kathryn M. Weber Publication_Date: 20161004 Title: Massachusetts Mean (interpolated) Beach Slope Point Data Geospatial_Data_Presentation_Form: tabular digital data Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/F7B8568F Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F7B8568F Description: Abstract: The National Assessment of Coastal Change Hazards project derives beach morphology features from lidar elevation data for the purpose of understanding and predicting storm impacts to our nation's coastlines. This dataset defines mean beach slopes for Massachusetts for data collected at various times between 2000 and 2013. Purpose: To provide mean slope data between the endpoint locations of the Mean High Water and seaward-most dune toe elevations, interpolated to a 200 meter (m) alongshore resolution using a 400-m wide Hanning window. This dataset, MA_Mean_Slopes.txt, and others associated with this project can be accessed online at https://doi.org/10.5066/F7B8568F. Supplemental_Information: The United States Geological Survey (USGS) Saint Petersburg Coastal and Marine Science Center (SPCMSC) - St. Petersburg, Fla., assigns a unique identifier (called a Field Activity Number, or FAN) to each cruise or field activity. The following FANs are associated with this activity: 00LTS04, 05CNT06, 10CNT05, 11CNT05, 13CNT05.The FAN naming convention is as follows: 00LTS04 tells us the data were collected in 2000 for the Lidar Topographic Survey (LTS) study, and the data were collected during the fourth field activity for that study in that calendar year. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20001001 Ending_Date: 20140421 Currentness_Reference: Ground condition Status: Progress: complete Maintenance_and_Update_Frequency: As needed. Data are updated when new lidar surveys are available. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -70.9903 East_Bounding_Coordinate: -69.9288 North_Bounding_Coordinate: 42.8613 South_Bounding_Coordinate: 41.5401 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:d7f43254-a472-47d6-a56f-6e6ea9509bf0 Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: St. Petersburg Coastal and Marine Science Center Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: SPCMSC Theme_Keyword: coastal Theme_Keyword: slope Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: hazards Theme_Keyword: marine geology Theme_Keyword: ocean sciences Theme_Keyword: LIDAR Theme_Keyword: topography Theme_Keyword: digital elevation models Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: elevation Theme_Keyword: oceans 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 Place: Place_Keyword_Thesaurus: Common Geographic Areas Place_Keyword: United States of America Place_Keyword: Atlantic Place_Keyword: Massachusetts Access_Constraints: None Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The USGS requests to be acknowledged as originator of the data in future products or derivative research. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Kara S. Doran Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: Saint Petersburg State_or_Province: FL Postal_Code: 33701 Country: UNITED STATES Contact_Voice_Telephone: 727-502-8117 Contact_Facsimile_Telephone: 727-502-8001 Contact_Electronic_Mail_Address: kdoran@usgs.gov Native_Data_Set_Environment: Microsoft Windows 7 Version 6.1 (Build 7600); Esri ArcGIS 10.2.2.4000; MATLAB R2014b Data_Quality_Information: Logical_Consistency_Report: Data gaps exist where there are no sandy shorelines (such as over inlets, marshes, or rocky coasts). For each 400- meter (m) window width, data will be given a null value if greater than 50% of points are missing. For inlets narrower than the 400-m window, only slopes associated with the data on either side of the inlet were computed. No additional checks for consistency were performed on this data. Completeness_Report: This dataset is considered complete for the information presented, as described in the abstract section. Users are advised to read the rest of the metadata record carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Horizontal accuracy was not estimated. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Vertical accuracy for beach and dune morphology (dune crest and toe elevation) data is dependent on the positional accuracy of the lidar data. Estimated vertical accuracy of lidar surveys is +/- 15 centimeters (cm). However, vertical accuracies may vary based on the type of terrain (for example, inaccuracies may increase as slope increases or with the presence of extremely dense vegetation) and the accuracy of the GPS and aircraft-attitude measurements. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) Originator: United States Geological Survey (USGS) Originator: National Aeronautics and Space Administration (NASA) Publication_Date: 20000101 Title: 2000 Fall East Coast NOAA/USGS/NASA Airborne LiDAR Assessment of Coastal Erosion (ALACE) Project for the US Coastline Online_Linkage: http://coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=11 Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20000920 Ending_Date: 20001102 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: 00LTS04 Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: JALBTCX (Joint Airborne Lidar Bathymetry Technical Center of eXpertise) Publication_Date: 2009 Title: 2005 - 2007 US Army Corps of Engineers (USACE) Topo/Bathy Lidar: Maine, Massachusetts, and Rhode Island Online_Linkage: http://coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=116 Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20051111 Ending_Date: 20070806 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: 05CNT06 Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) Originator: JALBTCX (Joint Airborne Lidar Bathymetry Technical Center of eXpertise) Publication_Date: Unpublished material Title: 2010 US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) Topobathy Lidar: Northeast (MA, ME, NH, RI) Online_Linkage: http://coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=1174 Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20100524 Ending_Date: 20100710 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: 10CNT05 Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) Originator: United States Geological Survey (USGS) Originator: Maine's Office of GIS (MEGIS) Originator: Photo Science Inc. (PSI) Publication_Date: 201308 Title: 2011 U.S. Geological Survey Topographic LiDAR: LiDAR for the North East Online_Linkage: http://coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=2524 Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20101220 Ending_Date: 20111211 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: 11CNT05 Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) Originator: United States Geological Survey (USGS) Originator: Woolpert Publication_Date: 20150708 Title: 2013-2014 U.S. Geological Survey CMGP LiDAR: Post Sandy Online_Linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=4914 Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20130806 Ending_Date: 20140421 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: 13CNT05 Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Process_Step: Process_Description: For dune morphology data: Elevation data from lidar surveys were interpolated in MATLAB R2014b to a gridded domain that was rotated parallel to the shoreline and had a resolution of 10 m in the alongshore direction and 2.5 m in the cross-shore direction. The interpolation method applies spatial filtering with a Hanning window that is twice as wide as the grid resolution. Dune morphology data are extracted from the elevation grid in MATLAB. Beach slopes were extracted from endpoint locations of the Mean High Water and dune toe elevations. The beach slopes were temporally averaged then interpolated to 200 m alongshore resolution by filtering with a 400 m wide Hanning window. More details on the methodology can be found in the USGS Open-File Report, "A method for determining average beach slope and beach slope variability for U.S. sandy coastlines", available at http://pubs.usgs.gov/of/2015/1053 Process_Date: 2016 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: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity Point Point_and_Vector_Object_Count: 1698 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0197843295 Longitude_Resolution: 0.0229959585 Geographic_Coordinate_Units: Decimal Degrees Geodetic_Model: Horizontal_Datum_Name: D WGS 1984 Ellipsoid_Name: WGS 1984 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: MA_Mean_Slopes.txt Entity_Type_Definition: Lidar-derived beach slopes. Measured as the endpoint slope between the locations of dune toe and Mean High Water elevation. Values of -999 represent "no data" values. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude of interpolated shoreline position in decimal degrees. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -70.9903 Range_Domain_Maximum: -69.9288 Attribute_Units_of_Measure: Decimal Degrees Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude of interpolated shoreline position in decimal degrees. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 41.5401 Range_Domain_Maximum: 42.8613 Attribute_Units_of_Measure: Decimal Degrees Attribute: Attribute_Label: slope Attribute_Definition: Mean of beach slopes. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0112 Range_Domain_Maximum: 0.3767 Attribute_Units_of_Measure: Radians Attribute: Attribute_Label: mean_res_err Attribute_Definition: Mean residual error. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.000703 Range_Domain_Maximum: 0.1691 Attribute_Units_of_Measure: Radians Attribute: Attribute_Label: 95_confidence Attribute_Definition: 95 percent confidence interval, equal to 2 x (mean_res_err). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0014 Range_Domain_Maximum: 0.3381 Attribute_Units_of_Measure: Radians Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Contact_Person: Kara S. Doran Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: Saint Petersburg State_or_Province: FL Postal_Code: 33701 Contact_Voice_Telephone: 727-502-8117 Contact_Facsimile_Telephone: 727-502-8001 Contact_Electronic_Mail_Address: kdoran@usgs.gov Resource_Description: MA_Mean_slopes.txt Distribution_Liability: This digital publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ASCII File_Decompression_Technique: none Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7B8568F/data/MA_Mean_Slopes.zip Fees: none Metadata_Reference_Information: Metadata_Date: 20201013 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey (USGS) Contact_Person: Kara S. Doran Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: Saint Petersburg State_or_Province: FL Postal_Code: 33701 Country: UNITED STATES Contact_Voice_Telephone: 727-502-8117 Contact_Facsimile_Telephone: 727-502-8001 Contact_Electronic_Mail_Address: kdoran@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time