Sustainable Seas Expedition Tracklines: Years 2000 and 2001

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Robert B. Halley

Originator: David C. Twichell

Originator: VeeAnn A. Cross

Publication_Date: 2005

Title: Sustainable Seas Expedition Tracklines: Years 2000 and 2001

Geospatial_Data_Presentation_Form: vector digital data

Online_Linkage:

<http://pubs.usgs.gov/of/2005/1089/data/rov_sub/sse/sse_alllines.zip>

Larger_Work_Citation:

Citation_Information:

Originator: VeeAnn A. Cross

Originator: David C. Twichell

Originator: Robert B. Halley

Originator: Kate T. Ciembronowicz

Originator: Bret D. Jarrett

Originator: Erika S. Hammar-Klose

Originator: Al C. Hine

Originator: Stan D. Locker

Originator: Dave F. Naar

Publication_Date: 2005

Title:

GIS Compilation of Data Collected from the Pulley Ridge Deep Coral Reef Region

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2005-1089

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/of/2005/1089>

Description:

Abstract:

Pulley Ridge is a series of drowned barrier islands that extends almost 200 km in 60-100 m water depths. This drowned ridge is located on the Florida Platform in the southeastern Gulf of Mexico about 250 km west of Cape Sable, Florida. This barrier island chain formed during the initial stage of the Holocene marine transgression. These islands were then submerged and left abandoned near the outer edge of the Florida Platform. The southern portion of Pulley Ridge hosts zooxanthellate scleractinian corals, green, red and brown macro algae, and a mix of deep and typically shallow-water tropical fishes. This reef community is in unusually deep water, and its extent and the controls on its distribution were unknown. To address these questions scientists from the U.S. Geological Survey Coastal and Marine Geology Program in cooperation with scientists from the University of South Florida Department of Marine Sciences have completed a detailed mapping of the southernmost 35 km of Pulley Ridge. The area was mapped using multibeam bathymetry, sidescan-sonar imagery, and high-resolution seismic-reflection profiling to define the geologic framework on which the reef is established. Submersible dives, remotely operated vehicle (ROV) transects, and transects of bottom photographs and video were collected to identify the corals and to map their distribution. This extensive suite of data has been compiled and preliminary analysis of the data suggests that the reefs are not tied to the ridge system, but instead are more broadly distributed. Whether reef distribution is controlled by oceanographic conditions or by subtle differences in the substrate that overlies the barrier island system is unclear, and are topics of continued research.

Purpose:

This polyline shapefile was generated to indicate the location of the Sustainable Seas Expedition dives in the Pulley Ridge area aboard the NOAA ship Gordon Gunter.

Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date: 20000826

Single_Date/Time:

Calendar_Date: 20000828

Single_Date/Time:

Calendar_Date: 20000829

Single_Date/Time:

Calendar_Date: 20010628

Single_Date/Time:

Calendar_Date: 20010629

Single_Date/Time:

Calendar_Date: 20010630

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -83.928788

East_Bounding_Coordinate: -83.630502

North_Bounding_Coordinate: 26.027587

South_Bounding_Coordinate: 24.703923

Keywords:

Theme:

Theme_Keyword_Thesaurus: General

Theme_Keyword: CMGP

Theme_Keyword: Coastal and Marine Geology Program

Theme_Keyword: coral

Theme_Keyword: coral reef

Theme_Keyword: navigation

Theme_Keyword: OF 2005-1089

Theme_Keyword: Open-File Report

Theme_Keyword: polyline

Theme_Keyword: reef

Theme_Keyword: shapefile

Theme_Keyword: submarine

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: USGS

Theme_Keyword: Woods Hole Science Center

Place:

Place_Keyword_Thesaurus: General

Place_Keyword: Florida

Place_Keyword: Florida Shelf

Place_Keyword: Gulf of Mexico

Place_Keyword: North America

Place_Keyword: Pulley Ridge

Place_Keyword: United States

Access_Constraints: None.

Use_Constraints:

The U.S. Geological Survey must be referenced as the originator of the dataset in any future products or research derived from these data.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Robert B. Halley

Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: USGS Center for Coastal and Watershed Studies

Address: 600 Fourth Street South

City: St. Petersburg

State_or_Province: FL

Postal_Code: 33701-4846

Contact_Voice_Telephone: (727) 803-8747 x3113

Contact_Facsimile_Telephone: (727) 803-2032

Contact_Electronic_Mail_Address: rhalley@usgs.gov

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535

Data_Quality_Information:

Lineage:

Process_Step:

Process_Description:

Converted the SSE navigation from excel spreadsheets to individual point shapefiles for each dive. This was accomplished by exporting the necessary records to a text file and then loading those as an event theme into ArcView and saving as a shapefile.

Process_Step:

Process_Description:

A line shapefile was then generated connecting the points in the order of navigation acquisition. This was done to help more readily spot obvious outliers.

Process_Step:

Process_Description:

In some cases, running a filter over the points helped remove outliers. (This is discussed in the next process step.) Some files had major outliers that needed to be deleted prior to the more automated filter process. This was done by visual inspection and usually just involved a few points. This modified shapefile was saved under a new name.

Process_Step:

Process_Description:

The submarine typically travels very slowly to aid in seafloor observations. In fact, the submarine can't travel extremely fast. Because of this, I was able to write a filter that looked at distance traveled between each navigation point. I could vary the filter values and see which points were selected as acceptable based on the filter values. The visual inspection of what appeared sensible determined if the filter values were accepted.

Process_Step:

Process_Description:

Once a reasonable filter was applied, those selected points were then saved into a new shapefile with the filter values used added as an attribute to the file. The filter works such that the first number is the distance accepted as movement between 2 adjacent points in time. The second number is the increment added to each subsequent time step. This value is smaller than the first otherwise before long very large error values would be accepted.

Process_Step:

Process_Description:

Once the individual dives were processed, these files were then combined into one shapefile using the Geoprocessing wizard in ArcView 3.2a.

Process_Step:

Process_Description:

An in-house avenue script (navpnts2lines.ave) was used to convert the point shapefile to a polyline shapefile based on the "sse_id" attribute.

Process_Step:

Process_Description: The "end_time" attribute was added to the shapefile.

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: String

Point_and_Vector_Object_Count: 12

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000000

Longitude_Resolution: 0.000000

Geographic_Coordinate_Units: Decimal degrees

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: sse_alllines

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: ID

Attribute_Definition: Internal number automatically generated.

Attribute_Definition_Source: Software created.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 0

Attribute:

Attribute_Label: SSE_ID

Attribute_Definition: Unique ID identifying the SSE dive.

Attribute_Definition_Source: Scientist.

Attribute_Domain_Values:

Unrepresentable_Domain: Character set.

Attribute:

Attribute_Label: SUB

Attribute_Definition: Submarine used on the dive.

Attribute_Definition_Source: Scientist.

Attribute_Domain_Values:

Unrepresentable_Domain: Character set.

Attribute:

Attribute_Label: START_TIME

Attribute_Definition: Start date and time of the dive.

Attribute_Definition_Source: Scientist.

Attribute_Domain_Values:

Unrepresentable_Domain: Character set representing month/day/year and hour:min:sec.

Attribute:

Attribute_Label: END_TIME

Attribute_Definition: End date and time of the dive.

Attribute_Definition_Source: Scientist.

Attribute_Domain_Values:

Unrepresentable_Domain: Character set representing month/day/year and hour:min:sec.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: David C. Twichell

Contact_Organization: U.S. Geological Survey

Contact_Position: Oceanographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700 x2266

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: dtwichell@usgs.gov

Resource_Description: Downloadable Data

Distribution_Liability:

These data were prepared by an agency of the United States Government. Neither the United States government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof. Although all data published in this report have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and/or the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Shapefile

Transfer_Size: 0.284

Metadata_Reference_Information:

Metadata_Date: 20050513

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: VeeAnn A. Cross

Contact_Organization: U.S. Geological Survey

Contact_Position: Marine 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

Contact_Voice_Telephone: (508) 548-8700 x2251

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: vatnipp@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_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile