Concentrated Commerce Traffic, as indicated by Automatic Identification System (AIS) data

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: The Massachusetts Office of Coastal Zone Management
Publication_Date: 20091231
Title:
Concentrated Commerce Traffic, as indicated by Automatic Identification System (AIS) data
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: <http://www.mass.gov/eea/mop>
Larger_Work_Citation:
Citation_Information:
Originator: The Massachusetts Office of Energy and Environmental Affairs
Publication_Date: 200912
Title: Massachusetts Ocean Management Plan
Other_Citation_Details:
These data were created to support the Oceans Act of 2008, signed by Gov. Deval Patrick May 28, 2008. The legislation requires Massachusetts to develop a first-in-the-nation comprehensive plan to manage development in its state waters, balancing natural resource preservation with traditional and new uses, including renewable energy. For text of the Oceans Act, see <http://www.mass.gov/legis/laws/seslaw08/sl080114.htm>. The final ocean management plan provides a comprehensive framework for managing, reviewing and permitting proposed uses of state waters. In addition to the management and administrative frameworks of the final plan, an accompanying volume provides a comprehensive baseline assessment cataloguing the current state of knowledge regarding human uses, natural resources, and other ecosystem factors in Massachusetts and surrounding ocean areas.
Online_Linkage: <http://www.mass.gov/eea/mop>
Description:
Abstract:
This dataset documents the density of vessel tracks during 2008 in the Massachusetts ocean management planning area and adjacent waters for commercial vessels greater than 299 tons. CZM digitized polygons from this dataset to represent areas where greater than 50 vessels were recorded over the duration of the year 2008 in a 250 x 250-meter grid cell.
The raw data were provided courtesy of Stellwagen Bank National Marine Sanctuary. Applied Science Associates (ASA) analyzed the raw data to create a raster grid. CZM digitized this dataset from the raster produced by ASA.
To allow for consistent evaluation and comparison of a variety of datasets with distinct spatial resolutions, accuracies, and other characteristics, the Massachusetts ocean management planning area was partitioned into 250 x 250-meter grid cells, each with a unique ID. These data were converted to the planning area grid by extracting all of the cells in which the data layer occurred. The data were then dissolved into one feature.
Purpose:
These data were used in the development of a comprehensive ocean management plan to protect critical marine resources and foster sustainable uses in Massachusetts state waters as mandated in the Oceans Act of 2008.
Supplemental_Information:
These data were created to support the Oceans Act of 2008, signed by Gov. Deval Patrick May 28, 2008. The legislation requires Massachusetts to develop a first-in-the-nation comprehensive plan to manage development in its state waters, balancing natural resource preservation with traditional and new uses, including renewable energy. For text of the Oceans Act, see <http://www.mass.gov/legis/laws/seslaw08/sl080114.htm>. The final ocean management plan provides a comprehensive framework for managing, reviewing and permitting proposed uses of state waters. In addition to the management and administrative frameworks of the final plan, an accompanying volume provides a comprehensive baseline assessment cataloguing the current state of knowledge regarding human uses, natural resources, and other ecosystem factors in Massachusetts and surrounding ocean areas.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20091231
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -71.060118
East_Bounding_Coordinate: -70.136251
North_Bounding_Coordinate: 42.823384
South_Bounding_Coordinate: 41.405230
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans, 014
Theme_Keyword: transportation, 018
Theme:
Theme_Keyword_Thesaurus:
NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 6.0.0.0.0
Theme_Keyword: Human Dimensions > Infrastructure > Transportation
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: marine spatial planning
Theme_Keyword: MSP
Theme_Keyword: ocean management
Theme_Keyword: coastal zone management
Theme_Keyword: ecosystem-based management
Theme_Keyword: EBM
Theme_Keyword: Automatic Identification System
Theme_Keyword: AIS
Theme_Keyword: vessel track
Theme_Keyword: vessel density
Theme_Keyword: concentrated commerce traffic
Place:
Place_Keyword_Thesaurus: Getty Thesaurus of Geographic Names
Place_Keyword: Massachusetts
Place_Keyword: Gulf of Maine
Place_Keyword: Massachusetts Bay
Place_Keyword: Cape Cod Bay
Place_Keyword: Nantucket Sound
Place_Keyword: Vineyard Sound
Place_Keyword: Buzzards Bay
Place:
Place_Keyword_Thesaurus: U.S. Board on Geographic Names
Place_Keyword: Massachusetts
Place_Keyword: Gulf of Maine
Place:
Place_Keyword_Thesaurus:
NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 6.0.0.0.0
Place_Keyword: Ocean > Atlantic Ocean > North Atlantic Ocean
Place_Keyword: Ocean > Atlantic Ocean > North Atlantic Ocean > Gulf Of Maine
Place_Keyword:
Continent > North America > United States Of America > Massachusetts
Access_Constraints:
None. These data are in the public domain. GIS files are freely available for download.
Use_Constraints:
Public domain data from the Massachusetts Office of Coastal Zone Management (CZM), an agency of the Commonwealth of Massachusetts Executive Office of Energy and Environmental Affairs (EEA), are freely redistributable with proper metadata and source attribution. Please recognize the Massachusetts Office of Coastal Zone Management as the source of these data. You are not permitted to use CZM's name or to suggest that CZM endorses your project or product, without its express written consent. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, CZM cannot assume liability for any damages or misrepresentation caused by any inaccuracies in the data or as a result of changes to the data caused by system transfers. The user must be aware of data conditions and bear responsibility for the appropriate use of these data with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to these data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: The Massachusetts Office of Coastal Zone Management
Contact_Position: CZM Data Manager
Contact_Address:
Address_Type: mailing address
Address: 251 Causeway Street, Suite 800
City: Boston
State_or_Province: MA
Postal_Code: 02114-2138
Country: USA
Contact_Voice_Telephone: 617-626-1200
Contact_Facsimile_Telephone: 617-626-1240
Contact_Electronic_Mail_Address: czm@state.ma.us
Hours_of_Service: 0900 hrs to 1600 hrs EST
Contact_Instructions: email only
Data_Set_Credit:
These spatial data were created by the Massachusetts Office of Coastal Zone Management (CZM) for the Massachusetts Executive Office of Energy and Environmental Affairs (EEA).
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3500

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: An attribute accuracy report was not conducted for these data.
Logical_Consistency_Report: A logical consistency report was not conducted for these data.
Completeness_Report: A completeness report was not conducted for these data.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: A positional accuracy report was not conducted for these data.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Stellwagen Bank National Marine Sanctuary
Publication_Date: 2008
Title: Automatic Identification System (AIS) Raw Data
Type_of_Source_Media: log files
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20080101
Ending_Date: 20081231
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: AIS data
Source_Contribution: The raw data used to create the raster.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Applied Science Associates (ASA)
Publication_Date: 20090405
Title: Automatic Identification System (AIS) 250 x 250-meter raster
Geospatial_Data_Presentation_Form: raster digital data
Type_of_Source_Media: digital raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20090405
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: AIS raster
Source_Contribution: The raster from which the polygons were digitized.
Process_Step:
Process_Description:
The AIS data for the Massachusetts coastal region were recorded by the US Coast Guard. The data for 2008 were provided to ASA as daily log files. These files were decoded using AIS Parser (<http://www.aisparser.com/>) written by Brian Lane. This C library provides routines to concatenate records and decode the NMEA sentences into the data fields. The decoded log data were then analyzed in MATLAB to evaluate the ship track density.
The vessels are counted as they pass through the cells of a regular grid covering the coastal region. Each vessel is counted once as it enters a grid cell and is not counted again unless it has been at least half an hour since it was last in a particular grid cell. This allows ships which repeatedly follow the same course over a month to be counted properly, while only counting a vessel once even though it may be recorded several times as it passes through a particular cell. One problem with this method is that if a ship is moored or on station for a long time it causes a spike in the results. These moored vessels have been removed from the data set. Missing data and intermittent records are not addressed in this data set. The statistics may be effected by the station location and the range of the receiver.
The grid used to count the vessels in this file is the ocean management planning area grid covering the Massachusetts coastal region. It has a 250-meter grid resolution.
Process_Date: 200904
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Applied Science Associates (ASA)
Contact_Address:
Address_Type: mailing address
Address: 55 Village Square Drive
City: South Kingstown
State_or_Province: RI
Postal_Code: 02879
Country: USA
Contact_Voice_Telephone: 401-789-6224
Contact_Facsimile_Telephone: 401-789-1932
Process_Step:
Process_Description:
CZM digitized polygons from the AIS raster dataset to represent areas where greater than 50 vessels were recorded over the duration of the year 2008 in a 250 x 250-meter grid cell.
To allow for consistent evaluation and comparison of a variety of datasets with distinct spatial resolutions, accuracies, and other characteristics, the Massachusetts ocean management planning area was partitioned into 250 x 250-meter grid cells, each with a unique ID. These data were converted to the planning area grid by extracting all of the cells in which the data layer occurred.
The data were clipped to the Massachusetts ocean management planning area. The data were then dissolved into one feature.
Process_Date: 2009
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: The Massachusetts Office of Coastal Zone Management
Contact_Position: CZM Data Manager
Contact_Address:
Address_Type: mailing address
Address: 251 Causeway Street, Suite 800
City: Boston
State_or_Province: MA
Postal_Code: 02114-2138
Country: USA
Contact_Voice_Telephone: 617-626-1200
Contact_Facsimile_Telephone: 617-626-1240
Contact_Electronic_Mail_Address: czm@state.ma.us
Hours_of_Service: 0900 hrs to 1600 hrs EST
Contact_Instructions: email only

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: 1

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 2001
Lambert_Conformal_Conic:
Standard_Parallel: 41.716667
Standard_Parallel: 42.683333
Longitude_of_Central_Meridian: -71.500000
Latitude_of_Projection_Origin: 41.000000
False_Easting: 200000.000000
False_Northing: 750000.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000
Ordinate_Resolution: 0.000000
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

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Concentrated commerce traffic
Entity_Type_Definition: Area representing an existing water-dependent use.
Entity_Type_Definition_Source: Massachusetts Ocean Management Plan
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: Dataset
Attribute_Definition: Dataset description.
Attribute_Definition_Source: CZM
Attribute_Domain_Values:
Unrepresentable_Domain: Description of features.

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: The Massachusetts Office of Coastal Zone Management
Contact_Position: CZM Data Manager
Contact_Address:
Address_Type: mailing address
Address: 251 Causeway Street, Suite 800
City: Boston
State_or_Province: MA
Postal_Code: 02114-2138
Country: USA
Contact_Voice_Telephone: 617-626-1200
Contact_Facsimile_Telephone: 617-626-1240
Contact_Electronic_Mail_Address: czm@state.ma.us
Hours_of_Service: 0900 hrs to 1600 hrs EST
Contact_Instructions: email only
Resource_Description: CZM_moris_om_conc_commerce_traf_poly
Distribution_Liability:
Although every effort has been made to ensure the accuracy of these data, errors and conditions originating from physical sources used to develop these data may be reflected in the data supplied. The client must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to certain data. In no event shall CZM be liable for any damages, whether general, special, incidental or consequential damages, arising out of your use of these data. Your sole remedy for damages is to stop using the data. You agree to defend, indemnify, and hold harmless CZM and its employees against any claim, loss, liability or expense, including attorneys' fees, resulting from loss of or damage to property or the injury to or death of any person arising out of the use of the data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ESRI Shapefile (.shp)
Format_Version_Number: ArcGIS 8.x & 9.x
Transfer_Size: 0.007
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://www.mass.gov/czm/mapping/index.htm>
Fees:
GIS and coordinate files may be downloaded at no charge by following links on the Massachusetts Office of Coastal Zone Management website (<http://www.mass.gov/czm/>).

Metadata_Reference_Information:
Metadata_Date: 20100222
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: The Massachusetts Office of Coastal Zone Management
Contact_Position: CZM Data Manager
Contact_Address:
Address_Type: mailing address
Address: 251 Causeway Street, Suite 800
City: Boston
State_or_Province: MA
Postal_Code: 02114-2138
Country: USA
Contact_Voice_Telephone: 617-626-1200
Contact_Facsimile_Telephone: 617-626-1240
Contact_Electronic_Mail_Address: czm@state.ma.us
Hours_of_Service: 0900 hrs to 1600 hrs EST
Contact_Instructions: email only
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.9.6 on Thu Feb 25 08:19:23 2010