Sediment-Texture Units of the Sea Floor for Vineyard and western Nantucket Sounds, Massachusetts (polygon shapefile, Geographic, WGS84)

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Wayne Baldwin
Publication_Date: 2016
Title:
Sediment-Texture Units of the Sea Floor for Vineyard and western Nantucket Sounds, Massachusetts (polygon shapefile, Geographic, WGS84)
Edition: 1
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2016-1119
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage:
<http://pubs.usgs.gov/of/2016/1119/GIS_catalog/SedimentTexture/VineyardNantucketSound_sedcover.zip>
Larger_Work_Citation:
Citation_Information:
Originator: Wayne E. Baldwin
Originator: David S. Foster
Originator: Elizabeth A. Pendleton
Originator: Walter A. Barnhardt
Originator: William C. Schwab
Originator: Brian D. Andrews
Originator: Seth D. Ackerman
Publication_Date: 2016
Title:
Shallow Geology, Sea-Floor Texture, and Physiographic Zones of Vineyard and western Nantucket Sounds, Massachusetts
Edition: 1
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2016-1119
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <http://pubs.usgs.gov/of/2016/1119/>
Description:
Abstract:
Geologic, sediment texture, and physiographic zone maps characterize the sea floor of Vineyard and western Nantucket Sounds, Massachusetts. These maps were derived from interpretations of seismic-reflection profiles, high-resolution bathymetry, acoustic-backscatter intensity, bottom photographs, and surficial sediment samples. The interpretation of the seismic stratigraphy and mapping of glacial and Holocene marine units provided a foundation on which the surficial maps were created. This mapping is a result of a collaborative effort between the U.S. Geological Survey and the Massachusetts Office of Coastal Zone Management to characterize the surface and subsurface geologic framework offshore of Massachusetts.
Purpose:
These sea floor sediment cover data were created from geophysical and sample data collected from Vineyard and western Nantucket Sounds, and are used to characterize the sea floor in the area. Sediment type and distribution maps are important data layers for marine resource managers charged with protecting fish habitat, delineating marine boundaries, and assessing environmental change due to natural or human impacts.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20010905
Ending_Date: 20110831
Currentness_Reference:
ground condition of the source data that this interpretation is based on
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -71.029685
East_Bounding_Coordinate: -70.430489
North_Bounding_Coordinate: 41.561614
South_Bounding_Coordinate: 41.320506
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: Massachusetts Office of Coastal Zone Management
Theme_Keyword: CZM
Theme_Keyword: Sea floor
Theme_Keyword: Marine Geology
Theme_Keyword: Interpretation
Theme_Keyword: Bathymetry
Theme_Keyword: Backscatter
Theme_Keyword: Slope
Theme_Keyword: Topography
Theme_Keyword: Esri Shapefile
Theme_Keyword: Bottom type
Theme_Keyword: Sediment Cover
Theme_Keyword: Sediment Texture
Theme_Keyword: Sediment Distribution
Theme_Keyword: Bottom Photographs
Theme_Keyword: Sediment Samples
Theme_Keyword: Seismic-reflection Profiles
Theme:
Theme_Keyword_Thesaurus: ISO keywords
Theme_Keyword: oceans
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Vineyard Sound
Place_Keyword: Nantucket Sound
Place_Keyword: Atlantic Ocean
Place_Keyword: Cape Cod
Place_Keyword: Succonnesset Point
Place_Keyword: Falmouth
Place_Keyword: Woods Hole
Place_Keyword: Gosnold
Place_Keyword: Elizabeth Islands
Place_Keyword: Nonamesset Island
Place_Keyword: Naushon Island
Place_Keyword: Pasque Island
Place_Keyword: Nashawena Island
Place_Keyword: Cuttyhunk Island
Place_Keyword: Martha's Vineyard
Place_Keyword: Aquinnah
Place_Keyword: Menemsha
Place_Keyword: Vineyard Haven
Place_Keyword: Oak Bluffs
Place_Keyword: Edgartown
Place_Keyword: Cape Poge
Place_Keyword: Lucas Shoal
Place_Keyword: Middle Ground Shoal
Place_Keyword: L'Hommedieu Shoal
Place_Keyword: Succonnesset Shoal
Place_Keyword: Hedge Fence Shoal
Place_Keyword: Squash Meadow Shoal
Stratum:
Stratum_Keyword_Thesaurus: None
Stratum_Keyword: Sea floor
Access_Constraints: None
Use_Constraints:
Not to be used for navigation. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. Additionally, there are limitations associated with qualitative sediment mapping interpretations. Because of the scale of the source geophysical data and the spacing of samples, not all changes in sea floor texture are captured. The data were mapped between 1:5,000 and 1:20,000, but the recommended scale for application of these data is 1:25,000.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2226
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
<http://pubs.usgs.gov/of/2016/1119/GIS_catalog/SedimentTexture/VineyardNantucketSound_sedcover.png>
Browse_Graphic_File_Description:
Image of the sediment texture and distribution shapefile for Vineyard and western Nantucket Sounds
Browse_Graphic_File_Type: PNG
Native_Data_Set_Environment: ESRI ArcCatalog 9.3.1.4095
Cross_Reference:
Citation_Information:
Originator: Kelley, J.T.
Originator: Barnhardt, W.A.
Originator: Belknap, D.F.
Originator: Dickson, S.M.
Originator: Kelley, A.R.
Publication_Date: 1998
Title:
The Seafloor Revealed: The Geology of the Northwestern Gulf of Maine Inner Continental Shelf
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Maine Geological Survey Open-File Report
Issue_Identification: 96-6
Publication_Information:
Publication_Place: Augusta, Maine
Publisher:
Maine Geological Survey, Natural Resources Information and Mapping Center
Online_Linkage: <http://www.maine.gov/dacf/mgs/explore/marine/seafloor/96-6.pdf>
Cross_Reference:
Citation_Information:
Originator: Barnhardt, W.A.
Originator: Kelley, J.T.
Originator: Dickson, S.M.
Originator: Belknap, D.F.
Publication_Date: 1998
Title:
Mapping the Gulf of Maine with Side-scan Sonar: a New Bottom-type Classification for Complex Seafloors
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Journal of Coastal Research
Issue_Identification: 14(2)
Publication_Information:
Publication_Place: Royal Palm Beach, FL
Publisher: Coastal Education and Research Foundation, Inc.
Cross_Reference:
Citation_Information:
Originator: McMullen, K.Y.
Originator: Paskevich, V.F.
Originator: Poppe, L.J.
Publication_Date: 2011
Title:
GIS data catalog (version 2.2), in Poppe, L.J., Williams, S.J., and Paskevich, V.F., eds., 2005, USGS East-coast Sediment Analysis: Procedures, Database, and GIS Data
Edition: 2.2
Geospatial_Data_Presentation_Form: tabular digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2005-1001
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <http://pubs.usgs.gov/of/2005/1001/htmldocs/datacatalog.htm>
Cross_Reference:
Citation_Information:
Originator: Ford, K.H.
Originator: Voss, S.E
Publication_Date: 2010
Title:
Seafloor Sediment Composition in Massachusetts Determined Using Point Data
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Massachusetts Division of Marine Fisheries Technical Report
Issue_Identification: TR-45
Publication_Information:
Publication_Place: New Bedford, MA
Publisher: Massachusetts Division of Marine Fisheries
Online_Linkage: <http://www.mass.gov/eea/docs/dfg/dmf/publications/tr-45.pdf>
Data_Quality_Information:
Logical_Consistency_Report:
These data were drawn and vetted for accuracy using the source input rasters and point sample data described in the processing steps and source contributions. Overlapping features and unintentional gaps within the survey area were identified using the topology checker in ArcMap (version 9.3.1) and corrected or removed.
Not all digitized sea floor features contained sample information, so often the sea floor texture is characterized by the nearest similar feature that contains a sample. Conversely, sometimes a digitized feature contained multiple samples and not all of the samples within the feature were in agreement (of the same texture). In these cases all data were considered, and the dominant sediment texture from sample analyses did not necessarily determine the primary texture assigned to a polygon. Samples from rocky areas often only consist of bottom photographs, because large particle size often prevents the recovery of a sediment sample. Bottom photo classification can be subjective, such that determining the sediment type that is greater than 50% of the view frame is estimated by the interpreter and may differ among interpreters. Bottom photo transects often reveal changes in the sea floor over distances of less than 100 m and these changes are often not observable in acoustic data. Heterogeneous sea floor texture can change very quickly, and many small-scale changes will not be detectable or mappable at a scale of 1:25,000. The boundaries of polygons are often inferred on the basis of sediment samples, and even boundaries that are traced on the basis of amplitude changes in geophysical data are subject to migration. Polygon boundaries should be considered an approximation of the location of a change in texture.
Completeness_Report:
These sediment cover data are defined for areas where source data exists. In general, gaps in the coverage coincide with gaps in the source data. However, some small data gaps were interpreted through extrapolation. Areas of lower data quality and incomplete coverage are noted in a data confidence attribute field.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
These data were produced qualitatively from acoustic and sample data with varying resolutions. Horizontal uncertainty associated with sample collection especially, can be quite high (100's of meters), much higher than positional uncertainty associated with acoustic data (usually less than <10's of meters). The date of sample collection and ship station positioning all contribute to sample position uncertainty. These qualitatively derived polygons outlining sea floor features are estimated to be within 50 meters, horizontally, but locally may be higher when sediment texture delineation is based on sample information alone.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Although there is a field for mean water depth, there is no assumption of vertical accuracy. The depth value is an average of all grid cells of the regional bathymetric DEM (see vns10m_navd88 in the larger work citation) within each polygon. In many cases the mean depth value covers a range of depths from near zero to < -20 meters, and as such should not be used for navigation or taken as an absolute depth value within a polygon.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Poppe, L.J.
Originator: Ackerman, S.D.
Originator: Foster, D.S.
Originator: Blackwood, D.S.
Originator: Butman, B.
Originator: Moser, M.S.
Originator: Stewart, H.F.
Publication_Date: 2007
Title:
Sea-floor character and surface processes in the vicinity of Quicks Hole, Elizabeth Islands, Massachusetts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2006-1357
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <http://pubs.usgs.gov/of/2006/1357/>
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20040810
Ending_Date: 20050617
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Poppe and others, 2007
Source_Contribution:
This publication provides the source geophysical data (backscatter and bathymetry) and bottom photographs and sediment samples for the Quicks Hole area. Two 29-foot launches deployed from the NOAA Ship Thomas Jefferson were used to acquire bathymetric and backscatter data during 2004. The multibeam bathymetric data were collected with hull-mounted 455-kHz RESON 8125 and 240-kHz RESON 8101 systems. The sidescan-sonar data were acquired with a hull-mounted Klein 5250 system operating at 100 kHz. Sediment samples and bottom photos were collected aboard the R/V Rafael with a modified Van Veen grab sampler and SEABOSS, respectively.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Poppe, L.J.
Originator: McMullen, K.Y.
Originator: Foster, D.S.
Originator: Blackwood, D.S.
Originator: Williams, S.J.
Originator: Ackerman, S.D.
Originator: Moser, M.S.
Originator: Glomb, K.A.
Publication_Date: 2010
Title:
Geological interpretation of the sea floor offshore of Edgartown, Massachusetts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2009-1001
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <http://pubs.usgs.gov/of/2009/1001/>
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20040814
Ending_Date: 20080909
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Poppe and others, 2010
Source_Contribution:
This publication provides the source geophysical (backscatter and bathymetry) and bottom photographs and sediment samples in the vicinity of Edgartown. Two 29-foot launches deployed from the NOAA Ship Thomas Jefferson were used to acquire bathymetric and backscatter data during 2004. The multibeam bathymetric data were collected with hull-mounted 455-kHz RESON 8125 and 240-kHz RESON 8101 systems. The sidescan-sonar data were acquired with a hull-mounted Klein 5250 system operating at 100 kHz. Sediment samples and bottom photos were collected aboard the R/V Rafael with a modified Van Veen grab sampler and SEABOSS, respectively.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Pendleton, E.A.
Originator: Twichell, D.C.
Originator: Foster, D.S.
Originator: Worley, C.R
Originator: Irwin, B.J.
Originator: Danforth, W.W.
Publication_Date: 2012
Title:
High-resolution geophysical data from the sea floor surrounding the Western Elizabeth Islands, Massachusetts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2011-1184
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <http://pubs.usgs.gov/of/2011/1184/>
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20100909
Ending_Date: 20100918
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Pendleton and others, 2012
Source_Contribution:
This report provided source geophysical data (sidescan, bathymetry, and seismic-reflection profiles) for portions of Vineyard Sound adjacent to the western Elizabeth Islands. Surveying was conducted aboard the RV Rafael in September 2010. Interferometric-sonar, sidescan-sonar, and chirp seismic-reflection systems were deployed simultaneously during the cruise. Bathymetric sounding data were collected with an SEA SWATHplus 234-kilohertz (kHz) interferometric sonar system. Sidescan-sonar (acoustic-backscatter) data were acquired with a Klein 3000 dual-frequency (100 and 500 kHz) sidescan-sonar system. High-resolution chirp seismic-reflection profiles were collected using an EdgeTech Geo-Star full spectrum sub-bottom (FSSB) system and SB-424 towfish.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Andrews, B.D.
Originator: Ackerman, S.D.
Originator: Baldwin, W.E.
Originator: Foster, D.S.
Originator: Schwab, W.C.
Publication_Date: 2014
Title:
High-Resolution Geophysical Data from the Inner Continental Shelf at Vineyard Sound, Massachusetts
Edition: 2
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2012-1006
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <http://pubs.usgs.gov/of/2012/1006/>
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20090528
Ending_Date: 20110517
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Andrews and others, 2014
Source_Contribution:
This report provided the source geophysical data (sidescan, bathymetry, and seismic-reflection profiles) for Vineyard and western Nantucket Sounds. The mapping was conducted during research cruises aboard the Megan T. Miller (2009 and 2010) and the Scarlett Isabella (2011). Bathymetric data were acquired using a Systems Engineering and Assessment, Ltd. (SEA) SWATHplus-M 234-kilohertz (kHz) interferometric sonar system, acoustic backscatter data were collected with a Klein 3000 dual-frequency sidescan-sonar (132 and 445 kHz), and chirp seismic-reflection data were collected using an EdgeTech Geo-Star FSSB subbottom profiling system and an SB-0512i towfish.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Pendleton, E.A.
Originator: Andrews, B.D.
Originator: Danforth, W.W.
Originator: Foster, D.S.
Publication_Date: 2014
Title:
High-resolution geophysical data collected aboard the U.S. Geological Survey research vessel Rafael to supplement existing datasets from Buzzards Bay and Vineyard Sound, Massachusetts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2013-1020
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <http://pubs.usgs.gov/of/2013/1020/>
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20071005
Ending_Date: 20110413
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Pendleton and others, 2014
Source_Contribution:
This report provided the source geophysical data (sidescan, bathymetry, and seismic-reflection profiles) for central portions of Vineyard and western Nantucket Sounds. These areas were surveyed with the RV Rafael in 2010 and 2011. In 2010, seismic-reflection data were acquired with a boomer source and GeoEel 8-channel streamer. Interferometric-sonar, sidescan-sonar, and Knudsen seismic-reflection systems were deployed simultaneously during cruise 2011. Bathymetry data were collected with an SEA SWATHplus 234-kilohertz (kHz) interferometric sonar, Sidescan-sonar (acoustic-backscatter) data were acquired with a Klein 3000 dual-frequency (100 and 500 kHz) sidescan sonar, and high-resolution chirp seismic data were collected using a dual frequency (3.5 and 200 kHz) Knudsen Engineering Limited (KEL) Chirp 3202 system.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Ford, K.H.
Originator: Huntley, E.C.
Originator: Sampson, D.W.
Originator: Voss, S.
Publication_Date: Unpublished Material
Title: Massachusetts Sediment Database
Geospatial_Data_Presentation_Form: vector digital data
Other_Citation_Details:
This sample database has been compiled and vetted from existing samples and datasets by the Massachusetts Office of Coastal Zone Management. The data are currently unpublished, but may be acquired by contacting the CZM office: 251 Causeway St Boston, MA 02114 (617) 626-1000 czm@state.ma.us
Type_of_Source_Media: digital vector
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19950101
Ending_Date: 20110101
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: CZM sample database
Source_Contribution:
Sediment sample databases of Ford and Voss (2010) and McMullen and others (2011) were combined then edited and supplemented with NOAA chart sampling data and bottom photos and descriptions by a group of GIS specialists at the Massachusetts Office of Coastal Zone Management (Emily Huntley, personal communication). These data contained sediment laboratory statistics when available, visual descriptions if sediment analysis was not performed or if the site was a bottom photograph, and classification fields of Barnhardt and others (1998), Shepard (1954), and Wentworth (1922) as well as average sediment statistics and phi size, when laboratory analysis was conducted.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Poppe, L.J.
Originator: McMullen, K.Y.
Originator: Foster, D.S.
Originator: Blackwood, D.S.
Originator: Williams, S.J.
Originator: Ackerman, S.D.
Originator: Barnum, S.R.
Originator: Brennan, R.T.
Publication_Date: 2008
Title:
Sea-floor character and sedimentary processes in the vicinity of Woods Hole, Massachusetts
Edition: 1.0
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: Open File Report
Issue_Identification: 2008-1004
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <http://pubs.usgs.gov/of/2008/1004/>
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20010905
Ending_Date: 20071119
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Poppe and others, 2008
Source_Contribution:
This publication provides the source geophysical data (backscatter and bathymetry) and bottom photographs and sediment samples for Woods Hole. Two 29-foot launches deployed from the NOAA Ship Whiting were used to acquire bathymetric and backscatter data during 2001. The bathymetric data were collected with a hull-mounted 240-kHz RESON 8101 shallow-water system aboard launch 1005. The sidescan-sonar data were acquired with a hull-mounted Klein T-5000 system operating at 455 kHz aboard launch 1014. Sediment samples and bottom photos were collected aboard the R/V Rafael with a modified Van Veen grab sampler and SEABOSS, respectively, in 2007.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Ackerman, S.D.
Originator: Pappal, A.L.
Originator: Huntley, E.C.
Originator: Blackwood, D.S.
Originator: Schwab, W.C.
Publication_Date: 2015
Title:
Geological Sampling Data and Benthic Biota Classification: Buzzards Bay and Vineyard Sound, Massachusetts
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Open file Report
Issue_Identification: 2014-1221
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <http://pubs.usgs.gov/of/2014/1221>
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20100909
Ending_Date: 20110914
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Ackerman and others, 2014
Source_Contribution:
This report provided high-resolution digital photographs of the Vineyard Sound and Buzzards Bay Seafloor. At each station, the USGS SEABOSS was towed approximately one meter off the bottom at speeds of less than one knot. Because the recorded position is actually the position of the GPS antenna on the survey vessel, not the SEABOSS sampler, the estimated horizontal accuracy of the sample location is ± 30 meters (m). Photographs were obtained using a Konica-Minolta DiMAGE A2 digital still camera, and continuous video was collected from a Kongsberg Simrad OE1365 high-resolution color video camera, usually for 5 to 15 minutes. These data were important in defining rocky zones where sediment samples do not exist.
Source_Information:
Source_Citation:
Citation_Information:
Originator:
U.S. Army Corps of Engineers - Joint Airborne Lidar Bathymetry Center of Expertise
Publication_Date: 2009
Title:
2005 - 2007 US Army Corps of Engineers (USACE) Topo/Bathy Lidar: Maine, Massachusetts, and Rhode Island
Geospatial_Data_Presentation_Form: digital point data
Publication_Information:
Publication_Place: Charleston, SC
Publisher:
NOAA National Ocean Service (NOS), Coastal Services Center (CSC)
Online_Linkage:
<http://coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=116>
Online_Linkage:
<ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/116>
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20070527
Ending_Date: 20070527
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: USACE-JALBTCX, 2009
Source_Contribution:
The source lidar data for the very nearshore (< -5 m) region along the northern shoreline of Vineyard and western Nantucket Sounds. Lidar (Light Detection and Ranging) data were acquired with a SHOALS-1000T (for hydrographic & topographic data) using the Joint Airborne Joint Airborne LiDAR Bathymetry Center of Expertise (JALBTCX) lidar plane. These data are now publically available in LAS lidar format via NOAA's Digital Coast website.
Source_Information:
Source_Citation:
Citation_Information:
Originator: National Oceanic and Atmospheric Administration
Publication_Date: 2008
Title:
Descriptive report, navigable area survey H11920, Vineyard Sound, Massachusetts, Gay Head to Cedar Tree Neck
Geospatial_Data_Presentation_Form: BAG files
Publication_Information:
Publication_Place: Norfolk, VA
Publisher:
National Oceanographic and Atmospheric Administration - National Ocean Survey
Online_Linkage:
<http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11920/>
Online_Linkage:
<http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11920/DR/H11920.pdf>
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20080715
Ending_Date: 20080908
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: NOAA, 2008
Source_Contribution:
The Bathymetry Attributed Grid (BAG) files accompanying this publication provide the source bathymetry data for portions of Vineyard Sound around the Menemsha Bight. Two 29-foot launches deployed from the NOAA Ship Thomas Jefferson were used to acquire bathymetry during 2008 using hull-mounted 455-kHz RESON 8125 and 240-kHz RESON 8101 systems.
Source_Information:
Source_Citation:
Citation_Information:
Originator: National Oceanic and Atmospheric Administration
Publication_Date: 2008
Title:
Descriptive report, navigable area survey H11921, Vineyard Sound, Massachusetts, Sow and Pigs reef to Quicks Hole
Geospatial_Data_Presentation_Form: BAG and TIFF files
Publication_Information:
Publication_Place: Norfolk, VA
Publisher:
National Oceanographic and Atmospheric Administration - National Ocean Survey
Online_Linkage:
<http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11921/>
Online_Linkage:
<http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11921/DR/H11921.pdf>
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20080806
Ending_Date: 20080908
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: NOAA, 2008
Source_Contribution:
The BAG and TIFF files accompanying this publication provide the source geophysical data (backscatter and bathymetry) for portions of Vineyard Sound around Cuttyhunk Island and Quicks Hole. Two 29-foot launches deployed from the NOAA Ship Thomas Jefferson were used to acquire bathymetric and backscatter data during 2008. The multibeam bathymetric data were collected with hull-mounted 455-kHz RESON 8125 and 240-kHz RESON 8101 systems. The sidescan-sonar data were acquired with a hull-mounted Klein 5250 system operating at 100 kHz.
Source_Information:
Source_Citation:
Citation_Information:
Originator: NOAA National Geophysical Data Center
Publication_Date: 2015
Title: NOS Hydrographic Survey Data
Geospatial_Data_Presentation_Form: tabular digital data
Online_Linkage: <http://ngdc.noaa.gov/mgg/bathymetry/hydro.html>
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1938
Ending_Date: 1977
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: NOAA Single-Beam Soundings
Source_Contribution:
These data include NOAA lead-line and single-beam sonar soundings, which were used to cover areas where no swath bathymetry or lidar data exist.
Process_Step:
Process_Description:
The texture and spatial distribution of sea-floor sediment were qualitatively analyzed in ArcGIS using several input data sources (listed in the source contribution), including acoustic backscatter, bathymetry, seismic-reflection profile interpretations, bottom photographs, and sediment samples. The interpretation was initiated by digitizing a polygon shapefile (file > new > shapefile in ArcCatalog 9.3.1, then editor > 'create new feature' in ArcMap 9.3.1) around the extent of the regional bathymetric DEM (see vns10m_navd88 in the larger work citation). The polygon was then partitioned into multiple sediment texture polygons using 'cut polygon' and 'auto-complete polygon' in an edit session. In general, polygon editing was done at scales between 1:5,000 and 1:20,000, depending on the size of the traced feature and the resolution of the source data. Some areas interpreted as a single sediment textural unit may contain multiple polygons that indicate different interpretation confidence levels. The following numbered steps outline the workflow of the data interpretation. 1. Backscatter intensity data (available at 1 m resolution) was the first input. Changes in backscatter amplitude were digitized to outline possible changes in sea-floor texture on the basis of acoustic return. Areas of high backscatter (light colors) have strong acoustic reflections and suggest boulders, gravels, and generally coarse sea-floor sediments. Low-backscatter areas (dark colors) have weak acoustic reflections and are generally characterized by finer grained material such as muds and fine sands. 2. The polygons were then refined and edited using gradient, rugosity, and hillshaded relief images derived from interferometric and multibeam swath bathymetry and (available at 10 m resolutions). Areas of rough topography and high rugosity are typically associated with rocky areas, while smooth, lower-relief regions tend to be blanketed by fine-grained sediment. These bathymetric derivatives helped to refine polygon boundaries where changes from primarily rock to primarily gravel may not have been apparent in backscatter data, but could easily be identified in hillshaded relief and slope changes. 3. The third data input (where available) was the stratigraphic interpretation of seismic-reflection profiles, which further constrained the extent and general shape of sea-floor sediment distributions and rocky outcrops, and also provided insight concerning the likely sediment texture of the feature on the basis of pre-Quaternary, glacial or post-glacial origin. Seismic lines and the surficial geologic maps derived from them and used here as input data were collected at typically 100-meter spacing, with tie-lines generally spaced 1-km apart. 4. After all the sea-floor features were traced from the geophysical data, a new field was created in the shapefile called 'sed_type'. Seafloor composition observations from sediment samples and bottom photographs/video were used to define sediment texture for the polygons using Barnhardt and others (1998) classification. Samples with laboratory grain size analysis were preferred over visual descriptions when defining sediment texture throughout the study area. Bottom photo stations are typically around 2-km apart, and the density of sediment samples varies throughout the study area. Some polygons contained more than one sample with grain-size statistics, while others contained none. For multiple samples within a polygon, the dominant sediment texture (or average phi size) was used to classify sediment type (often aided by the 'data join' sediment statistics described in a later processing step). In rocky areas, bottom photos were used in the absence of sediment samples to qualitatively define sediment texture. Polygons that lacked sample information were texturally defined through extrapolation from adjacent or proximal polygons of similar acoustic character that did contain sediment samples. 219 samples within the study area were analyzed in the laboratory for grain size. Bottom photo stations are typically around 2-km apart, and the density of sediment samples varies throughout the study area.
Source_Used_Citation_Abbreviation:
All source geophysical data and seafloor sediment observation data
Process_Date: 2014
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2226
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
Process_Step:
Process_Description:
After some additional qualitative polygon editing and reshaping was done in order to create a sediment map that was in the best agreement with all input data: lidar, bathymetry, backscatter, seismic interpretations, bottom photographs, and sediment samples, 3 more fields were added (ArcMap version 9.3.1). The first field, 'simple' is just 3 classes: sand, mud, or hardbottom. Another field 'phi_class' was created and defined using the Wentworth (1922) sediment classification, and finally, a field 'ConfLevel' was added as a data interpretation confidence, which describes how confident we are in the interpretation on the basis of the number and quality of the input data sources (see the entity and attribute sections for more information on these fields). The remaining fields contain sediment texture statistics or mean water depth information and were created and populated using data joins or zonal statistics functions within ArcMap (version 9.3.1). The fields beginning with "Avg_" and the 'Count_' field were automatically generated by computing a data join where the CZM sample database (vector points) was edited to include only the samples with laboratory sediment analysis and joined to the qualitatively derived polygon file. Each polygon was given an average of the numeric attributes of the points (with laboratory grain size analysis) that fall inside it, and the count field shows how many laboratory analyzed points fall inside it. 219 samples were analyzed in the laboratory. Several fields that were not wanted were deleted after the join. A mean water depth (NAVD 88) field was created using ArcMap (version 9.3): ArcToolbox - Spatial Analyst Tools > Zonal > Zonal Statistics as Table, where the mean water depth for each polygon (input zone data using the zone field sed_type) was derived from the regional bathymetric DEM (see vns10m_navd88 in the larger work citation). No data raster values were ignored in determining the output value for each polygon zone. If all raster values were null within a polygon, that zone had a null value (changed to -999) for that zone. The output was saved to a table, which was joined with the sediment type polygon shapefile. All of the joined fields except MEAN were turned off, and the joined shapefile was exported to a new shapefile.
Source_Used_Citation_Abbreviation:
polygon shapefile containing sediment texture units and point shapefile containing seafloor sediment observations
Process_Date: 2014
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2226
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
Process_Step:
Process_Description:
The polygon shapefile containing sediment texture units with joined sediment sample lab statistics was imported as a feature class within a file geodatabase feature dataset, and topological rules were established (ArcCatalog 9.3.1). Topological errors, primarily overlaps and gaps, were identified and remedied using the topology toolbar in ArcMap (9.3.1).
Source_Used_Citation_Abbreviation:
polygon shapefile containing sediment texture units with joined sediment sample lab statistics
Process_Date: 2014
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2226
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
Process_Step:
Process_Description:
The sediment texture polygon feature class was exported back to a shapefile and the 'Shape_Area' and 'Shape_Length' fields were deleted from its attribute table (ArcCatalog and ArcMap 9.3.1). XTools Pro (7.1.0) was then used to add and populate a new attribute field containing polygon area in square kilometers based on UTM, zone 19 N, WGS84. Finally, the shapefile was reprojected from UTM zone 19 N, WGS84 to GCS WGS84 using ArcToolbox > Data Management Tools > Projections and Transformations > Feature > Project.
Source_Used_Citation_Abbreviation: sediment texture polygon feature class
Process_Date: 2014
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2226
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 1149
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
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: VineyardNantucketSound_sedcover
Entity_Type_Definition:
Sediment Cover shapefile for Vineyard and western Nantucket Sounds
Entity_Type_Definition_Source: U.S. Geological Survey
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: sed_type
Attribute_Definition:
Bottom-type classification on the basis of twelve composite units that represent combinations of four end-member units (R= rock; G= gravel; S= sand; M= mud).
Attribute_Definition_Source: Barnhardt and others (1998)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: G
Enumerated_Domain_Value_Definition:
The end-member texture (= or > 90%) Gravel (G) is the primary texture.
Enumerated_Domain_Value_Definition_Source: Barnhardt and others (1998)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Gs
Enumerated_Domain_Value_Definition:
The dominant texture (> 50%) Gravel (G) is given the upper case letter and the subordinate texture (< 50%) sand (s) is given a lower case letter.
Enumerated_Domain_Value_Definition_Source: Barnhardt and others (1998)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: S
Enumerated_Domain_Value_Definition:
The end-member texture (= or > 90%) Sand (S) is the primary texture.
Enumerated_Domain_Value_Definition_Source: Barnhardt and others (1998)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sg
Enumerated_Domain_Value_Definition:
The dominant texture (> 50%) Sand (S) is given the upper case letter and the subordinate texture (< 50%) gravel (g) is given a lower case letter.
Enumerated_Domain_Value_Definition_Source: Barnhardt and others (1998)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sm
Enumerated_Domain_Value_Definition:
The dominant texture (> 50%) Sand (S) is given the upper case letter and the subordinate texture (< 50%) mud (m) is given a lower case letter.
Enumerated_Domain_Value_Definition_Source: Barnhardt and others (1998)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ms
Enumerated_Domain_Value_Definition:
The dominant texture (> 50%) Mud (M) is given the upper case letter and the subordinate texture (< 50%) sand (s) is given a lower case letter.
Enumerated_Domain_Value_Definition_Source: Barnhardt and others (1998)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Rg
Enumerated_Domain_Value_Definition:
The dominant texture (> 50%) Rock (R) is given the upper case letter and the subordinate texture (< 50%) gravel (g) is given a lower case letter.
Enumerated_Domain_Value_Definition_Source: Barnhardt and others (1998)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Rs
Enumerated_Domain_Value_Definition:
The dominant texture (> 50%) Rock (R) is given the upper case letter and the subordinate texture (< 50%) sand (s) is given a lower case letter.
Enumerated_Domain_Value_Definition_Source: Barnhardt and others (1998)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Gr
Enumerated_Domain_Value_Definition:
The dominant texture (> 50%) Gravel (G) is given the upper case letter and the subordinate texture (< 50%) rock (r) is given a lower case letter.
Enumerated_Domain_Value_Definition_Source: Barnhardt and others (1998)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sr
Enumerated_Domain_Value_Definition:
The dominant texture (> 50%) Sand (S) is given the upper case letter and the subordinate texture (< 50%) rock (r) is given a lower case letter.
Enumerated_Domain_Value_Definition_Source: Barnhardt and others (1998)
Attribute:
Attribute_Label: ConfLevel
Attribute_Definition:
Each interpreted polygon was assigned a data interpretation confidence value from 1-5 (more to less confident) on the basis of the quality and number of input data sources.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition:
Sediment texture regions that were defined on the basis of the highest resolution bathymetry (10m) and backscatter (1m), bottom photos, sediment samples with laboratory analysis, and seismic interpretations were given the highest data interpretation confidence value of 1.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition:
Sediment texture regions that were defined on the basis of the highest resolution bathymetry (10m), backscatter (1m), and seismic data, and possibly bottom photos and/or qualitative descriptions of sediment samples, but no sediment samples with laboratory analysis were given the data interpretation confidence value of 2
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition:
Sediment texture regions that were defined on the basis of the highest resolution bathymetry (10m) and backscatter (1m), possibly bottom photos, and possibly sediment samples with laboratory analysis and/or qualitative descriptions, but no seismic interpretations were given the data interpretation confidence value of 3.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 4
Enumerated_Domain_Value_Definition:
Sediment texture regions that were defined on the basis of the highest resolution bathymetry (10m) and/or lidar bathymetry, possibly bottom photos, and possibly sediment samples with laboratory analysis and/or qualitative descriptions, but no acoustic backscatter or seismic interpretations were given the data interpretation confidence value of 4.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 5
Enumerated_Domain_Value_Definition:
Sediment texture regions that were defined on the basis of low-resolution leadline and/or single beam bathymetry, possibly bottom photos, and possibly sediment samples with laboratory analysis and/or qualitative descriptions were given the lowest data interpretation confidence value of 5.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: simple
Attribute_Definition:
sediment nomenclature on the basis of 3 simple classes: sand, mud, hardbottom as defined in the CZM sample database
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: sand
Enumerated_Domain_Value_Definition: Sediment whose primary component (> 50%) is sand
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: hardbottom
Enumerated_Domain_Value_Definition:
Sediment whose primary component is rock, boulder, cobble, or coarse gravel
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: mud
Enumerated_Domain_Value_Definition: Sediment whose primary component (> 50%) is silt and clay
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: phi_class
Attribute_Definition:
Sediment class as defined by Wentworth classification determined using laboratory analyzed samples in the CZM sample database. Null values are indicated as -999 and not all of these phi classes are present in this dataset.
Attribute_Definition_Source: Wentworth (1922)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: coarse gravel
Enumerated_Domain_Value_Definition: sediment class whose phi size is between -4 and -5
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: coarse silt
Enumerated_Domain_Value_Definition: sediment class whose phi size is between 4 and 5
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: coarse sand
Enumerated_Domain_Value_Definition: sediment class whose phi size is between 0 and 1
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: cobble
Enumerated_Domain_Value_Definition: sediment class whose phi size is between -6 and -8
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: fine gravel
Enumerated_Domain_Value_Definition: sediment class whose phi size is between -2 and -3
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: fine sand
Enumerated_Domain_Value_Definition: sediment class whose phi size is between 2 and 3
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: fine silt
Enumerated_Domain_Value_Definition: sediment class whose phi size is between 6 and 7
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: medium gravel
Enumerated_Domain_Value_Definition: sediment class whose phi size is between -3 and -4
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: medium sand
Enumerated_Domain_Value_Definition: sediment class whose phi size is between 2 and 1
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: medium silt
Enumerated_Domain_Value_Definition: sediment class whose phi size is between 5 and 6
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: very coarse gravel
Enumerated_Domain_Value_Definition: sediment class whose phi size is between -5 and -6
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: very coarse sand
Enumerated_Domain_Value_Definition: sediment class whose phi size is between 0 and -1
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: very fine gravel
Enumerated_Domain_Value_Definition: sediment class whose phi size is between -1 and -2
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: very fine sand
Enumerated_Domain_Value_Definition: sediment class whose phi size is between 3 and 4
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: very fine silt
Enumerated_Domain_Value_Definition: sediment class whose phi size is between 7 and 8
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition:
sediment class whose phi size could not be determined from grain size data or there were no samples with laboratory analyzed grain size statistics within the polygon
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: Area
Attribute_Definition:
Area of feature in square kilometers using UTM, zone 19, WGS 84.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000001
Range_Domain_Maximum: 90.567
Attribute_Units_of_Measure: square kilometers
Attribute_Measurement_Resolution: 0.000001
Attribute:
Attribute_Label: Count_
Attribute_Definition:
The number of sediment samples (with laboratory analyzed grain size statistics) that occur within each qualitatively derived polygon. This field was automatically generated by Esri when point data (sample database) is joined to a polygon (sediment texture interpretation). A value of zero indicates there are no samples within that polygon.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 52
Attribute_Units_of_Measure: count
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: Avg_Gravel
Attribute_Definition:
Average percent weight (%) gravel (as determined from samples with laboratory analyzed grain size statistics) within each qualitatively derived polygon. This field was automatically generated by Esri as a summary of the numeric attributes of the points that fall inside a polygon when point data (sample database) is joined to a polygon (sediment texture interpretation).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 70.88
Attribute_Units_of_Measure: percent
Attribute:
Attribute_Label: Avg_Sand
Attribute_Definition:
Average percent weight (%) sand within each qualitatively derived polygon. This field was automatically generated by Esri as a summary of the numeric attributes of the points that fall inside a polygon when point data (sample database) is joined to a polygon (sediment texture interpretation).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 11.50
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: percent
Attribute:
Attribute_Label: Avg_Silt
Attribute_Definition:
Average percent weight (%) silt within each qualitatively derived polygon. This field was automatically generated by Esri as a summary of the numeric attributes of the points that fall inside a polygon when point data (sample database) is joined to a polygon (sediment texture interpretation).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 66.49
Attribute_Units_of_Measure: percent
Attribute:
Attribute_Label: Avg_Clay
Attribute_Definition:
Average percent weight (%) clay within each qualitatively derived polygon. This field was automatically generated by Esri as a summary of the numeric attributes of the points that fall inside a polygon when point data (sample database) is joined to a polygon (sediment texture interpretation).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 22.14
Attribute_Units_of_Measure: percent
Attribute:
Attribute_Label: Avg_PHI
Attribute_Definition:
Average phi size within each qualitatively derived polygon (-999 is a no data value, which means there were no samples with laboratory analyzed grain size statistics within that polygon)
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -2.28
Range_Domain_Maximum: 6.63
Attribute_Units_of_Measure: phi
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: MEAN
Attribute_Definition:
Average seafloor elevation (NAVD 88) within each qualitatively derived polygon (-999 is a no data value, which means no mean sea-floor elevation was calculated within that polygon).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -32.95
Range_Domain_Maximum: -1.37
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 0.01
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2226
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
Resource_Description:
VineyardNantucketSound_sedcover.zip from USGS Open File report 2016-1119. WinZip v. 14.5 file contains qualitatively derived polygons that define sea floor texture and distribution from Vineyard and western Nantucket Sounds, MA and the associated metadata.
Distribution_Liability:
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. 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 or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
Format_Version_Number: ArcMap 9.3.1
Format_Specification: Esri Polygon Shapefile
Format_Information_Content:
WinZip v. 14.5 file contains qualitatively derived polygons that define sea floor texture and distribution from Vineyard and western Nantucket Sounds, MA and the associated metadata.
File_Decompression_Technique: WinZip or pkUnzip
Transfer_Size: 1.16
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://pubs.usgs.gov/of/2016/1119/GIS_catalog/SedimentTexture/VineyardNantucketSound_sedcover.zip>
Network_Resource_Name: <http://pubs.usgs.gov/of/2016/1119/ofr20161119_data_catalog.html>
Access_Instructions: Data can be downloaded via the World Wide Web (WWW)
Fees: None
Technical_Prerequisites:
These data are available in Environmental Systems Research Institute (Esri) shapefile format. The user must have software capable of importing and processing this data type.
Metadata_Reference_Information:
Metadata_Date: 20161208
Metadata_Review_Date: 2016
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Wayne Baldwin
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2226
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
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
Generated by mp version 2.9.12 on Thu Dec 08 12:00:43 2016