rugosity_marxan

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
The British Columbia Marine Conservation Analysis (BCMCA), a Tides Canada Initiatives Project
Publication_Date: November, 2009
Title: rugosity_marxan
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Ecological Data
Publication_Information:
Publisher: BCMCA
Online_Linkage:
\\CARRIE\C$\BCMCA\data4Marxan_May2010\Physical\physical_marxan_features.mdb
Description:
Abstract:
The British Columbia Marine Conservation Analysis (BCMCA) is a collaborative project assembling and analyzing spatial information about Canada's Pacific Ocean. The overall goal of the BCMCA is to identify marine areas of high conservation value and marine areas important to human use. Results of the project are intended to inform and help advance marine planning initiatives in BC by providing collaborative, peer-reviewed scientific analyses based on the best ecological and human use spatial data at scales relevant to a BC coast-wide analysis.
Purpose:
To represent high rugosity areas in British Columbia coastwide out to the limit of the Exclusive Economic Zone (200nm). Dataset presented as 2 x 2 km planning units for MARXAN analysis.
Supplemental_Information:
"Rugosity can be best defined as the ratio of surface area to planar area. Basically, rugosity is a measure of terrain complexity or the "bumpiness" of the terrain. In the benthic environment, rugosity can be used to aid in the identification of areas with high biodiversity, depending on the scale of the input bathymetry. "
Natural logarithm of rugosity from 75 m bathymetric model of British Columbia coast out to the Exclusive Economic Zone using the Nature Conservancy's application, Benthic Terrain Mapping. The Benthic Terrain Modeller (BTM) tool, a collection of ArcGIS terrain visualization tools developed by the Oregon State University (OSU) Department of Geosciences and the National Oceanic and Atmospheric Administration (NOAA) Coastal Services Center, was used to calculate the rugosity of the bathymetric grid for the Southern Strait of Georgia. More information on the specific algorithms used can be found in the BTM's documentation (<http://www.csc.noaa.gov/products/btm/>).
Model created by extending the 75m model created for the Gwaii Haanas NMCA south to the bottom of the EEZ.
Model created by extending the 75m model created for the Gwaii Haanas NMCA south to the bottom of the EEZ.
The Gwaii Haanas model was by mosaicing three bathymetric rasters together: (1) a 75 m. bathymetric raster created by NRCan for the west coast of BC from 1:250,000 CHS Bathymetric Contours; (2) a 100 m. bathymetric raster created by LOS for the entire west coast out to the EEZ; and (3) a 2 m. Multi beam bathymetry raster for Juan Perez Sound. There were some seams evident in the data, at the edges of the mosaiced datasets.
This was extended south to the bottom of EEZ using data obtained from the Marine Geoscience Data System covering block
48.2 -132 -126 46.2
MGDS permits download of data at a maximum of four times screen resolution. In order to achieve a spatial resolution, 83m, roughly equivalent to the 75m bathymetry used in Gwaii Haanas, the data were downloaded in two halves west and east on either side of -129.
Data sets merged in this order: eew_sw_idwpi, eew_se_idwpi, bathy_mosaic with the first entries in the list having priority. This overwrote the tongue sticking down south from bathy_mosaic.
Anomalies due to overlapping bathymetry datasets of differing resolutions were visually cleaned.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2008
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -138.391403
East_Bounding_Coordinate: -122.310791
North_Bounding_Coordinate: 54.873517
South_Bounding_Coordinate: 46.105865
Keywords:
Theme:
Theme_Keyword_Thesaurus: None.
Theme_Keyword: bathymetry
Theme_Keyword: Exclusive Economic Zone
Theme_Keyword: Bathymetric Terrain Mapping
Theme_Keyword: rugosity
Place:
Place_Keyword: British Columbia
Access_Constraints:
This dataset is subject to the terms and conditions of the data use agreements for the source datasets.
Use_Constraints:
This dataset is subject to the terms and conditions of the data use agreements for the source datasets. Be advised that this data set is a mosaic of several data sets each of which has been 'cleaned' somewhat. This mosaic is a long way from the source data and was created only to allow bathymetric terrain modelling. It must NOT be used for navigation.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Karin Bodtker
Contact_Organization: British Columbia Marine Conservation Analysis
Contact_Position: BCMCA Co-Chair
Contact_Address:
Address_Type: mailing and physical address
Address: 1405-207 West Hastings Street
City: Vancouver
State_or_Province: BC
Postal_Code: V6B 1H7
Country: Canada
Contact_Voice_Telephone: 6046965044
Contact_Electronic_Mail_Address: kbodtker@livingoceans.org
Data_Set_Credit:
Doug Hrynyk and Kristal Royle, Parks Canada; Robert Kung, NRCan; Jeff Ardron, Living Oceans Society; the Marine Geoscience Data Service; BCMCA
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.3.1.3500
Data_Quality_Information:
Lineage:
Source_Information:
Source_Contribution: BCMCA 2 km x 2 km planning units for the Canadian Pacific EEZ.
Source_Information:
Source_Contribution:
Natural logarithm of rugosity from 75 m bathymetric model of British Columbia coast out to the Exclusive Economic Zone using the Nature Conservancy's application, Benthic Terrain Mapping.
Model created by extending the 75m model created for the Gwaii Haanas NMCA south to the bottom of the EEZ.
Model created by extending the 75m model created for the Gwaii Haanas NMCA south to the bottom of the EEZ.
The Gwaii Haanas model was by mosaicing three bathymetric rasters together: (1) a 75 m. bathymetric raster created by NRCan for the west coast of BC from 1:250,000 CHS Bathymetric Contours; (2) a 100 m. bathymetric raster created by LOS for the entire west coast out to the EEZ; and (3) a 2 m. Multi beam bathymetry raster for Juan Perez Sound. There were some seams evident in the data, at the edges of the mosaiced datasets.
Process_Step:
Process_Description: Points imported from shapefile to geodatabase grid.
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Doug Hrynyk
Contact_Organization: Parks Canada, Western and Northern Service Centre
Contact_Position: Marine Ecosystem GIS Analyst
Contact_Address:
Address_Type: mailing and physical address
Address: 300 - 300 West Georgia Street
City: Vancouver
State_or_Province: British Columbia
Postal_Code: V6B 6B4
Country: Canada
Contact_Voice_Telephone: (604) 666-3634
Contact_Facsimile_Telephone: (604) 666-7957
Contact_Electronic_Mail_Address: Doug.Hrynyk@pc.gc.ca
Process_Step:
Process_Description: Metadata imported from shapefile to geodatabase.
Process_Date: 20090415
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Doug Hrynyk
Contact_Organization: Parks Canada, Western and Northern Service Centre
Contact_Position: Marine Ecosystem GIS Analyst
Contact_Address:
Address_Type: mailing and physical address
Address: 300 - 300 West Georgia Street
City: Vancouver
State_or_Province: British Columbia
Postal_Code: V6B 6B4
Country: Canada
Contact_Voice_Telephone: (604) 666-3634
Contact_Facsimile_Telephone: (604) 666-7957
Contact_Electronic_Mail_Address: Doug.Hrynyk@pc.gc.ca
Process_Step:
Process_Description:
Natural logarithm of rugosity taken using raster calculator in the same manner as Krista Royle's work with BTM in the S. Strait of Georgia.
The Benthic Terrain Modeller (BTM) tool, a collection of ArcGIS terrain visualization tools developed by the Oregon State University (OSU) Department of Geosciences and the National Oceanic and Atmospheric Administration (NOAA) Coastal Services Center, was used to calculate the rugosity of the bathymetric grid for the Southern Strait of Georgia. More information on the specific algorithms used can be found in the BTM's documentation (<http://www.csc.noaa.gov/products/btm/>).
Source_Used_Citation_Abbreviation: Y:\Coastwide_BTM\BC_Albers\eez_slope.xml
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Doug Hrynyk
Contact_Organization: Parks Canada, Western and Northern Service Centre
Contact_Position: Marine Ecosystem GIS Analyst
Contact_Address:
Address_Type: mailing and physical address
Address: 300 - 300 West Georgia Street
City: Vancouver
State_or_Province: British Columbia
Postal_Code: V6B 6B4
Country: Canada
Contact_Voice_Telephone: (604) 666-3634
Contact_Facsimile_Telephone: (604) 666-7957
Contact_Electronic_Mail_Address: Doug.Hrynyk@pc.gc.ca
Process_Step:
Process_Description:
Masked using coastline assembled from BC TRIM 20k, Washington, and Oregon coastlines. Masked using a psuedo mask bcwaor_msk.
Source_Used_Citation_Abbreviation: Y:\Coastwide_BTM\BC_Albers\ln_rugosity.xml
Process_Date: 20090417
Process_Time: 11331700
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Doug Hrynyk
Contact_Organization: Parks Canada, Western and Northern Service Centre
Contact_Position: Marine Ecosystem GIS Analyst
Contact_Address:
Address_Type: mailing and physical address
Address: 300 - 300 West Georgia Street
City: Vancouver
State_or_Province: British Columbia
Postal_Code: V6B 6B4
Country: Canada
Contact_Voice_Telephone: (604) 666-3634
Contact_Facsimile_Telephone: (604) 666-7957
Contact_Electronic_Mail_Address: Doug.Hrynyk@pc.gc.ca
Process_Step:
Process_Description:
Exported from ESRI raster format to ESRI image format to simplify distribution.
Process_Date: 20090417
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Doug Hrynyk
Contact_Organization: Parks Canada, Western and Northern Service Centre
Contact_Position: Marine Ecosystem GIS Analyst
Contact_Address:
Address_Type: mailing and physical address
Address: 300 - 300 West Georgia Street
City: Vancouver
State_or_Province: British Columbia
Postal_Code: V6B 6B4
Country: Canada
Contact_Voice_Telephone: (604) 666-3634
Contact_Facsimile_Telephone: (604) 666-7957
Contact_Electronic_Mail_Address: Doug.Hrynyk@pc.gc.ca
Process_Step:
Process_Description:
Reclass tool used to reclassify the dataset into 5 classes based on quantiles. A new raster was created from the top class and this raster was converted to a polygon shapefile.
Source_Used_Citation_Abbreviation:
O:\BCMCA\Data_received\Physical\ParksCanada\BTM\ln_rugos_msk.img.xml
Process_Date: October 2009
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Carrie Robb
Contact_Organization: Living Oceans Society (for BCMCA)
Contact_Position: GIS Specialist
Process_Step:
Process_Description:
The previous processing steps to mosaic the four bathymetric rasters resulted in a number of unintended "artifacts" that occurred along the seams between raster images. These artifacts consisted of polygons that were incorrectly assigned to rugosity classes where 2 or more raster images joined. The following iterates the process of cleaning up the dataset by removing polygons along seams to the value of the most prominent adjacent polygon. Using both the rugosity shapefile and the original bathymetric rasters obvious artifacts along seams were identified, selected and deleted in an edit session. Certain linear artifacts which ran along seams often branched off of larger polygons that did not need to be removed. Where this occurred the polygons were cut and made into separate polygons and only the artifact was then deleted. The coordinates of each polygon removed was recorded (rugosity_cleanup.xls).
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mathew Evans
Contact_Organization: BCMCA
Contact_Position: GIS Contractor
Process_Step:
Process_Description:
During the feature review, erroneous high rugosity areas in the southwest corner of the EEZ were identified. These areas were likely generated when higher resolution multibeam datasets for this area were mosaiked with the other, lower resolution bathymetry data. These areas were compared to the bathymetry data and artifacts were removed. This process was performed manually and cannot be considered to be highly precise. The clean file was verified by Krista Royle and Greg MacMillan of Parks Canada.
Process_Date: January 2010
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Carrie Robb
Contact_Organization: Living Oceans Society (for BCMCA)
Contact_Position: GIS Specialist
Process_Step:
Process_Description:
Dataset was intersected with the BCMCA planning units (2 km x 2 km grid cells) and then dissolved based on the ID and UnitID fields.
Process_Date: June 2010
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Carrie Robb
Contact_Organization: Living Oceans Society (for BCMCA)
Contact_Position: GIS Specialist
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 12338
Column_Count: 15145
Vertical_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 50.000000
Standard_Parallel: 58.500000
Longitude_of_Central_Meridian: -126.000000
Latitude_of_Projection_Origin: 45.000000
False_Easting: 1000000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000100
Ordinate_Resolution: 0.000100
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: rugosity_marxan
Attribute:
Attribute_Label: OBJECTID
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: Unit_ID
Attribute_Definition: Planning unit ID
Attribute:
Attribute_Label: ID
Attribute_Definition: Unique Marxan ID
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: British Columbia Marine Conservation Analysis
Contact_Instructions: See www.bcmca.ca for distribution details
Resource_Description: Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 15.415
Metadata_Reference_Information:
Metadata_Date: 20100616
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Carrie Robb
Contact_Organization: Living Oceans Society (for BCMCA)
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 1405-207 West Hastings Street
City: Vanvouver
State_or_Province: BC
Postal_Code: V6B 1H7
Country: Canada
Contact_Voice_Telephone: 604-696-5044
Contact_Electronic_Mail_Address: crobb@livingoceans.org
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
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
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 Aug 26 15:07:59 2010