Archive of Chirp Subbottom Data
Collected During USGS Cruise ORGN00005, Northeastern Gulf of Mexico,
15 February
- 2 March, 2000
Title Page
- Introduction
- Cruise Report
- Equipment
- Chirp Data
- Shotpoint Maps
- Navigation
- Pictures
- Metadata
Metadata also available as a text
file.
Metadata:
- Identification_Information:
-
- Citation:
-
- Citation_Information:
-
- Originator:
Mark K. Capone
- Originator:
Kathryn M. Scanlon
- Originator:
B. Ann Swift
- Publication_Date:
20020000
- Title:
- Archive of Chirp
Subbottom Data Collected During USGS Cruise ORGN00005,Northeastern
Gulf of Mexico, 15 February - 2 March, 2000
- Publication_Information:
-
- Publication_Place:
Woods Hole, MA
- Publisher:
U.S. Geological Survey
- Other_Citation_Details:
none
- Online_Linkage:
none
- Description:
-
- Abstract:
- This DVD-ROM contains digital high-resolution
seismic-reflection data collected during the USGS
ORGN00005 cruise. The seismic-reflection data
are stored as SEG-Y standard format which can be read
and manipulated by most seismic-processing software.
Much of the information specific to the
data are contained in the headers of the SEG-Y format
files. Software is available on this DVD-ROM for
viewing and processing the individual swaths using
computer systems running a UNIX operating system.
- Purpose:
- In 1999, the Gulf of
Mexico Fishery Management Council recommended that NOAA's National
Marine Fisheries Service establish two approximately 11-square-mile
areas on the shelf edge in the northeastern Gulf of Mexico as no-fishing
areas. One of the areas, the Madison-Swanson Marine Protected Area
(MPA) lies about 100 km south of Panama City, Florida. The second
area, Steamboat Lumps MPA lies about 150 km SSE of Madison-Swanson.
The high-resolution seismic-reflection data contained herein were
collected as part of a larger study of the effectiveness of no-fishing
reserves in protecting grouper spawning aggregations. These subbottom
profiles will be used in conjunction with other data to map the seafloor
geology and the character and extent of benthic habitats within and
surrounding the two MPAs. They show the shape and acoustic impedence
of the seafloor and the thicknesses and orientations of shallow subsurface
horizons. These data may be helpful in the following applications:
1.choosing biological monitoring sites 2.management decisions in the
MPAs 3.choosing sites for future MPAs 4.studies of paleo-sealevel
5.studies of the inter-relationships between seafloor geology and
benthic ecology 6.studies of sedimentary geology and geologic framework
of the northeastern Gulf of Mexico
- Time_Period_of_Content:
-
- Time_Period_Information:
-
- Range_of_Dates/Times:
-
- Beginning_Date:
20000215
- Beginning_Time:
000000
- Ending_Date:
20000302
- Ending_Time:
000000
- Currentness_Reference:
Ground Condition
- Status:
-
- Progress: Complete
- Maintenance_and_Update_Frequency:
As needed
- Spatial_Domain:
-
- Bounding_Coordinates:
-
- West_Bounding_Coordinate:
-86
- East_Bounding_Coordinate:
-84.3
- North_Bounding_Coordinate:
29.5
- South_Bounding_Coordinate:
28
- Keywords:
-
- Theme:
-
- Theme_Keyword_Thesaurus:
None
- Theme_Keyword:
seismic reflection
- Theme_Keyword:
SEG-Y
- Theme_Keyword:
Chirp
- Theme_Keyword:
Datasonics SIS 1000
- Place:
-
- Place_Keyword_Thesaurus:
None
- Place_Keyword:
Gulf of Mexico
- Place_Keyword:
Pascagoula
- Place_Keyword:
Mississippi
- Place_Keyword:
West Florida Shelf
- Place_Keyword:
Madison-Swanson
- Place_Keyword:
Steamboat Lumps
- Access_Constraints:
- The U.S. Geological Survey
must be referenced as the originator of this dataset in any future products
or research derived from these data.
- Use_Constraints:
none
- Point_of_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person:
Kathryn M. Scanlon
- Contact_Organization:
U.S. Geological Survey
- Contact_Position:
Geology of Benthic Habitats Project
- Contact_Address:
-
- Address_Type:
mailing address
- Address:
- U.S. Geological
Survey Woods Hole Field Center 384 Woods Hole Road Quissett
Campus
- City:
Woods Hole
- State_or_Province:
MA
- Postal_Code:
02543-1598
- Country:
USA
- Contact_Voice_Telephone:
(508) 457-2323
- Contact_Facsimile_Telephone:
(508) 457-2310
- Contact_Electronic_Mail_Address:
kscanlon@usgs.gov
- Data_Set_Credit:
USGS Seafloor Mapping Group
- Native_Data_Set_Environment:
SEG-Y
- Data_Quality_Information:
-
- Logical_Consistency_Report:
- The data set was acquired
during one cruise and one collection platform, therefore is internally
consistent.
- Completeness_Report:
Data is complete with regard to surveyed area.
- Positional_Accuracy:
-
- Horizontal_Positional_Accuracy:
-
- Horizontal_Positional_Accuracy_Report:
- The ship was navigated
with differential GPS
- Quantitative_Horizontal_Positional_Accuracy_Assessment:
-
- Horizontal_Positional_Accuracy_Value:
5-10 meters
- Horizontal_Positional_Accuracy_Explanation:
DGPS is assumed to beaccurate within 5-10 meters
- Vertical_Positional_Accuracy:
-
- Vertical_Positional_Accuracy_Report:
- There is an apparent
accuracy problem in this data set resulting from inaccurate fish
depths recorded when the tow fish was raised or lowered. The result
is a small vertical offset of the data that can be seen in the
plotted profiles. The fish depth appears to adjust to the proper
depth within a lag time of several seconds.
- Lineage:
-
- Process_Step:
-
- Process_Description:
- The subbottom data
were recorded on the ISIS data acquisition system in QMIPS format.
Chirp subbottom channel extracted from raw QMIPS format sonar
files and converted to 16-bit Int. SEG-Y format using program
the QMIPSTOSEGY. Before the subbottom data are converted to SEG-Y
format, the trace data were padded with zero amplitude samples
to correct for the depth of the tow fish beneath the water surface.
The SIS-1000 tow fish is equipped wiith a pressure transducer
for recording the fish depth to the QMIPS file header. The pressure
depth is also stored in the optional part of the SEG-Y trace header,
so it can be used for further processing.
- Process_Date:
20000700
- Process_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person:
Foster, Dave
- Contact_Organization:
U.S. Geological Survey
- Contact_Position:
Seafloor Mapping Project
- Contact_Address:
-
- Address_Type:
mailing address
- Address:
- U.S.
Geological Survey Woods Hole Field Center 384 Woods
Hole Road Quissett Campus
- City:
Woods Hole
- State_or_Province:
MA
- Postal_Code:
02543-1598
- Country:
USA
- Contact_Voice_Telephone:
(508) 548-2271
- Contact_Facsimile_Telephone:
(508) 457-2310
- Contact_Electronic_Mail_Address:
dfoster@usgs.gov
- Spatial_Data_Organization_Information:
-
- Indirect_Spatial_Reference:
- Horizontal X and Y UTM coordinates
for each shot location are located in the SEG-Y trace headers
- Spatial_Reference_Information:
-
- Horizontal_Coordinate_System_Definition:
-
- Planar:
-
- Grid_Coordinate_System:
-
- Grid_Coordinate_System_Name:
Universal Transverse Mercator
- Universal_Transverse_Mercator:
-
- UTM_Zone_Number:
16
- Transverse_Mercator:
-
- Scale_Factor_at_Central_Meridian:
.9997
- Longitude_of_Central_Meridian:
-087.000000
- Latitude_of_Projection_Origin:
+00.000000
- False_Easting:
500,000
- False_Northing:
0
- Planar_Coordinate_Information:
-
- Planar_Coordinate_Encoding_Method:
coordinate pair
- Coordinate_Representation:
-
- Abscissa_Resolution:
5
- Ordinate_Resolution:
5
- Planar_Distance_Units:
meters
- Geodetic_Model:
-
- Horizontal_Datum_Name:
North American Datum of 1983
- Ellipsoid_Name:
Geodetic Reference System 80
- Semi-major_Axis:
6378137
- Denominator_of_Flattening_Ratio:
298257
- Vertical_Coordinate_System_Definition:
-
- Altitude_System_Definition:
-
- Altitude_Datum_Name:
assumed sea level
- Altitude_Resolution:
1
- Altitude_Distance_Units:
two-way travel time
- Altitude_Encoding_Method:
Attribute values
- Depth_System_Definition:
-
- Depth_Datum_Name:
local surface (sea level)
- Depth_Resolution:
1
- Depth_Distance_Units:
meters
- Depth_Encoding_Method:
Attribute values
- Distribution_Information:
-
- Distributor:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person:
Soderberg, Nancy
- Contact_Organization:
U.S. Geological Survey
- Contact_Position:
Data Library
- Contact_Address:
-
- Address_Type:
mailing address
- Address:
- U.S. Geological
Survey Woods Hole Field Center 384 Woods Hole Road Quissett
Campus
- City:
Woods Hole
- State_or_Province:
MA
- Postal_Code:
02543-1598
- Country:
USA
- Contact_Voice_Telephone:
(508) 548-8700
- Contact_Facsimile_Telephone:
(508) 457-2310
- Contact_Electronic_Mail_Address:
nsoderberg@usgs.gov
- Resource_Description:
U.S. Geological Survey Internal DVD-ROM Data Archive
- Distribution_Liability:
- This DVD-ROM publication
was 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 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 on this DVD-ROM 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.
- Metadata_Reference_Information:
-
- Metadata_Date: 200109
- Metadata_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person:
Foster, Dave
- Contact_Organization:
U.S. Geological Survey
- Contact_Position:
Seafloor Mapping Group
- Contact_Address:
-
- Address_Type:
mailing address
- Address:
- U.S. Geological
Survey Woods Hole Field Center 384 Woods Hole Road Quissett
Campus
- City:
Woods Hole
- State_or_Province:
MA
- Postal_Code:
02543-1598
- Country:
USA
- Contact_Voice_Telephone:
(508) 548-2271
- Contact_Facsimile_Telephone:
(508) 457-2310
- Contact_Electronic_Mail_Address:
dfoster@usgs.gov
- Metadata_Standard_Name:
FGDC Content Standard
- Metadata_Standard_Version:
FGDC-STD-001-1998
- Metadata_Access_Constraints:
none
- Metadata_Use_Constraints:
- none
Title Page
- Introduction
- Cruise Report
- Equipment
- Chirp Data
- Shotpoint Maps
- Navigation
- Pictures
- Metadata