Title: usSEABED: Atlantic Coast Offshore Surficial Sediment Data Release
Edition: 1.0
Series_Information:
Series_Name: Data Series
Issue_Identification: 118
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: http://pubs.usgs.gov/ds/2005/118/
Description:
Abstract:
The facies data layer (_FAC.txt) is a point coverage of known sediment samplings, inspections, and probings from the usSEABED data collection and integrated using the software system dbSEABED.
The facies data layer (_FAC.txt)represents concatenated information about components (minerals and rock type), genesis (igneous, metamorphic, carbonate, terrigenous), and other appropriate groupings of information about the seafloor.
The facies data are parsed from written descriptions from cores, grabs, photographs, and videos, and may apply only to a subsample as denoted by the Top, Bottom, and SamplePhase fields.
Lack of values in a defined facies field does not necessarily imply lack of the components defining that field, but may imply a lack of data for that field.
Purpose:
The Facies layer can be used to investigate the known information about a particular area of the seafloor.
These data are intended for science researchers, policy makers, students, and the general public. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information.
Supplemental_Information: This layer can be used in a relational data base, using the DataSetKey to link to the ATL_SRC.txt file for brief metadata information and to formal metadata written on each source, and to the other data files of usSEABED using the SiteKey or SampleKey as relational links.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2005
Currentness_Reference: publication date
Status:
Progress: In work
Maintenance_and_Update_Frequency: As significant additional information is added to the usSEABED data collection and/or significant changes to the data mining software.
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -81.99860
East_Bounding_Coordinate: -65.00000
North_Bounding_Coordinate: 44.90600
South_Bounding_Coordinate: 23.02000
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: marine
Theme_Keyword: sediment
Theme_Keyword: seafloor
Theme_Keyword: seabed
Theme_Keyword: descriptions
Theme_Keyword: analyses
Theme_Keyword: usSEABED
Theme_Keyword: dbSEABED
Theme_Keyword: components
Theme_Keyword: features
Theme_Keyword: genesis
Theme_Keyword: facies
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: Pacific Science Center
Theme_Keyword: Marine Aggregates Resources and Processes Project
Theme_Keyword: Benthic Habitats (Pacific) Project
Theme_Keyword: University of Colorado
Theme_Keyword: Institute of Arctic and Alpine Research
Theme_Keyword: USGS
Theme_Keyword: CMGP
Theme_Keyword: WHSC
Theme_Keyword: PSC
Theme_Keyword: UC
Theme_Keyword: INSTAAR
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans and estuaries
Theme_Keyword: location
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: Atlantic Coast
Place_Keyword: East Coast
Place_Keyword: United States
Place_Keyword: North America
Place_Keyword: Atlantic Ocean
Access_Constraints: None
Use_Constraints: Public domain data from the U.S. Government are freely redistributable with the proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Browse_Graphic_File_Description: Image map showing extent of data layer coverage
Browse_Graphic_File_Type: JPEG
Data_Set_Credit: We thank the following interns for their assistance in data entry, coding, and data testing: Viness Ubert, Emma Mitchell, Emily Denham and Shea Quinn.
Native_Data_Set_Environment: Tkme: Another editor for formal metadata by Peter N. Schweitzer (U.S. Geological Survey, Reston, VA 22092), version 2.9.13, Microsoft Windows Version 5.1; Microsoft Word 2000 9.0
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: Accuracy of each attribute is dependent on the accuracy of the original source description and the values calculated by the mining software, dbSEABED. Values are based on filters using fuzzy set theory and represent a measure of truth about the attribute.
Logical_Consistency_Report: Data in the usSEABED data collection are based on the observations and analyses of others, filtered through a unifying and mining software. Each source report varies in type of information/data recorded and format. Only those observations that are recorded can be filtered and mined; only presence (not absences) of information can be noted.
Completeness_Report: Additional useable data may exist in this area; the authors appreciate any information and leads.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Locational accuracy is dependent on both the accuracy of the navigational technique and the level of detail about the location as recorded in the individual data sources, and may vary widely (ie.g., from 0.005 km (differential GPS) in the more recent surveys to greater than 2 km based on radar, Loran, or dead reckoning in the older surveys.
Users of the data should note the metadata written about the original sources and use their own criteria for assessing the accuracy of the locations.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Depth determinations, both water depth and subsample depth, are dependent on the accuracy of the depth determination technique and the level of detail noted in the original source.
Users of the data should note the metadata written about the original sources and use their own criteria for assessing the accuracy of the locations.