Jane F. Denny
2003
02031 - Geophysical Surveys of Bear Lake, Utah-Idaho, September 2002 - Shot Point Navigation 500 shot interval (CHRP_500)
digital vector data
Woods Hole Coastal and Marine Science Center, Woods Hole, MA
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.3133/ofr03150
http://pubs.usgs.gov/of/2003/of03-150/arcview/shape/tracks/chrp_500.zip
J.F. Denny
S.M. Colman
2003
Geophysical Surveys of Bear Lake, Utah-Idaho, September, 2002
1.0
Open-File Report
03-150
Reston, VA
U.S. Geological Survey
http://pubs.usgs.gov/of/2003/of03-150/
Bear Lake is a tectonic lake that has existed for at least several hundred thousand years. The lake basin is a relatively simple half graben, a spoon-shaped depression tilted toward the main fault on the east side of the lake. The U.S. Geological Survey, in cooperation with researchers from several universities, has been studying the sediments of Bear Lake since 1996. The general purpose of this effort is to reconstruct past limnological conditions and regional climate on a range of timescales, from hundreds of years to hundreds of thousands of years. This research relates to a variety of human concerns, including water usage in the Bear River basin. Past work has included several coring operations, a seismic-reflection survey, sediment-trap deployments, a barge-mounted drilling operation with the GLAD800 drill rig, and a variety of other studies.
The objectives of the September, 2002 operations, preliminarily reported here, were (1) to compile a detailed bathymetric map of the lake using swath-mapping techniques, in order to provide baseline data for a variety of applications and studies, and (2) to complete a sidescan-sonar survey of the lake, providing a nearly complete acoustic image of the lake floor. Limited amounts of subbottom acoustic-reflection data (chirp) were also collected, along with samples of lake-floor sediments representative of different kinds of backscatter patterns. These surveys followed an earlier subbottom acoustic-reflection survey (1997), using boomer and 3.5 kHz systems (S. M. Colman, unpublished data).
These data represent the shot point navigation data for the
seismic-reflection systems utilized during
U.S. Geological Survey geophysical research cruises.
20020904
20020916
publication date
None planned
-111.5
-111.17
42.2
41.08
USGS Metadata Identifier
USGS:0f5f283b-7b28-40ee-9682-3b2c1f43dec7
None
seismic reflection
SEG-Y
Chirp
shot point
navigation
U.S. Geological Survey
USGS
Coastal and Marine Geology Program
CMGP
Woods Hole Science Center
WHSC Field Activity Number 02031
ISO 19115 Topic Category
location
geoscientificInformation
USGS Thesaurus
navigational data
geophysics
geospatial datasets
none
Bear Lake
Utah
Idaho
North America
United States
None
The U.S. Geological Survey must be referenced as the originator of the dataset in any future publications.
Jane F. Denny
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
(508) 548-8700 x2311
(508) 457-2310
jdenny@usgs.gov
ArcView version 3.2 shapefile format
These navigation data have been stripped from the header of seismic SEG-Y data. They have been quality checked by comparing these data to navigation data acquired during cruise operations.
Complete
WAAS (Wide Area Augmentation System) Navigation was used to acquire navigation information. WAAS is considered to have a horizontal accuracy of < 3 meters. The chirp tow-vehicle was towed at the surface, next to the vessel. WAAS positioning was recorded in the SEGY header of the seismic data. Navigation of the seismic tow-vehicle is assumed to be +/- 5 meters.
The seismic shot navigation is received by the differential GPS system (WAAS), sent directly to the seismic acquisition system, and recorded in the SEG-Y header of each file. The navigation is later extracted from the SEG-Y header and resampled at 500 shot interval using the UNIX awk command (retaining the start and end of each file). The file is then converted from its native UTM projection (zone 18, units meters, WGS84 datum) to Geographic Coordinate System, and formatted into a comma-delimited ASCII file. This file is imported into ArcView 3.2 as a table. The table is then converted into a point shapefile.
2003
Jane F. Denny
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
(508) 548-8700 x2311
(508) 457-2310
jdenny@usgs.gov
Edits to the metadata were made to fix any errors that MP v 2.9.32 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). The link to the data in the Distribution_Information section had to be added. Other distribution information had to be added to meet the standard. Minor fixes to the attribute format for some attributes were needed. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent.
20160713
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
USGS Thesaurus keywords added to the keyword section.
20180720
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Crossref DOI link was added as the first link in the metadata.
20191118
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Added keywords section with USGS persistent identifier as theme keyword.
20200908
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Vector
point
240
0.000089992
0.000089992
decimal degrees
WGS84
WGS84
6378137.0000000
298.26
Assumed sea level
1
Two-way travel time
Attribute values
Local surface
1
Meters
Attribute values
Seismic Shot Point Navigation
Shapefile Attribute Table
ArcView 3.2
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
internal ArcView 3.2 ID
ArcView 3.2
ArcView 3.2
LON
Information unavailable from original metadata.
Information unavailable from original metadata.
Information unavailable from original metadata.
LAT
Information unavailable from original metadata.
Information unavailable from original metadata.
Information unavailable from original metadata.
LINE
Information unavailable from original metadata.
Information unavailable from original metadata.
Information unavailable from original metadata.
SHOT
Information unavailable from original metadata.
Information unavailable from original metadata.
Information unavailable from original metadata.
Lon
X coordinate in Geographic Coordinate System
Geographic Coordinate System
-111.5
-111.17
Lat
y-Coordinate in Geographic Coordinate System
Geographic Coordinate System
41.08
42.2
YEAR
Information unavailable from original metadata.
Information unavailable from original metadata.
Information unavailable from original metadata.
Line
Line Number
data set
Line Number
Shot
Shot Point Number
data set
Shot Point Number
UTMX
X Coordinate; UTM, Zone 12
data set
450000
480000
UTMY
Y-Coordinate; UTM, Zone 12
data set
4500000
4700000
Year
Calendar Date
Calendar
Calendar Date
JD_HR_MIN_
Time - Julian Day, Hour, Minute, Second
Calendar Date
Calendar Date
Jane F. Denny
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
(508) 548-8700 x2311
(508) 457-2310
jdenny@usgs.gov
Downloadable Data
This 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 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 CD-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.
SHP
0.007
http://pubs.usgs.gov/of/2003/of03-150/arcview/shape/tracks/chrp_500.zip
none
The data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS® or ArcView® 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing data. A free data viewer, arcexplorer, capable of displaying the data is available from ESRI at www.esri.com.
20240318
Jane F. Denny
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
(508) 548-8700 x2311
(508) 457-2310
whsc_data_contact@usgs.gov
The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240318)
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
None
None