gov.noaa.ngdc.mgg.seismic:MGL1111_SubbottomProfiler
series
NOAA National Centers for Environmental Information
ncei.info@noaa.gov
https://www.ncei.noaa.gov/contact
NCEI Contact Information
Information for contacts at NCEI.
information
pointOfContact
2020-05-07
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
World Geodetic System 1984
WGS 84
2007-08-27
revision
https://epsg.org/crs_4326/WGS-84.html
WGS 84
GML of World Geodetic System 1984 coordinate reference system.
information
resourceProvider
European Petroleum Survey Group
https://epsg.org/home.html
European Petroleum Survey Group Geodetic Parameter Registry
Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations.
search
publisher
urn:ogc:def:crs:EPSG::4326
Instantaneous Water Level depth
2012-08-10
revision
https://epsg.org/crs_5831/Instantaneous-Water-Level-depth.html
GML for Instantaneous Water Level depth (in meters) available from the epsg-registry.
information
resourceProvider
European Petroleum Survey Group
https://epsg.org/home.html
European Petroleum Survey Group Geodetic Parameter Registry
Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations.
search
publisher
urn:ogc:def:crs:EPSG::5831
MGL111 Chirp - US Extended Continental Shelf Project: Bering Sea CHIRP High-Resolution Seismic Profile Data
2011-08-08
publication
NOAA National Centers for Environmental Information
NCEI Metadata ID: gov.noaa.ngdc.mgg.seismic:MGL1111_SubbottomProfiler
NOAA National Centers for Environmental Information
publisher
Dr. Ginger Barth
United States Geological Survey
author
The Knudsen 2620 acquired sub-bottom profiles continuously throughout the cruise. The Knudsen was operated in 3.5 kHz Chirp mode, emitting a 1.5 kHz to 5 kHz (3 kHz bandwidth centered on 3.5 kHz) pulse from transducers mounted in the pod beneath the hull. A record window of 100 or 200 meters and assumed sound velocity of 1500 m/s remained constant through the cruise, except for areas where topographic variation dictated a greater than 200 meter record window. The resulting data records were 131 or 261 msec long, with a sample interval 0.038 msec. The ping rate varied over the course of the cruise, generally between 4 and 6 seconds.
The purpose of this field program was to determine sediment thickness, sedimentary architecture and velocity structure, and basement structure in support of requirements for continental shelf maritime zone definition in the Bering Sea. The program was focused on the velocity structure of the sedimentary fill in the central Aleutian basin, and the structures and processes that control variability in that velocity profile, including the influence of basement structure and the distribution of natural gas and hydrate charged sediments. The survey primarily explored the region of the central donut hole of international waters in the deep Aleutian basin, and included some coverage southward into the US EEZ approaching Bowers ridge.
NOAA National Centers for Environmental Information
ncei.info@noaa.gov
https://www.ncei.noaa.gov/contact
NCEI Contact Information
Information for contacts at NCEI.
information
pointOfContact
Jennifer Jencks
NOAA National Centers for Environmental Information
303 497-6419
Jennifer.Jencks@noaa.gov
8:00 - 5:00 Mountain
pointOfContact
KEB, SEGY
Seismic:Active:Subbottom
DataType Keywords
2009-12-01
publication
Seismic:Reflection
theme
ProcessedMethod Keywords
2009-12-01
publication
Other
theme
ProcessedDataClass Keywords
2009-12-01
publication
DigitalSeg:DigitallyAcquired
SeismicDataProvenance Keywords
2009-12-01
publication
[1495] Bowers Ridge
[1494] Shirshov Ridge
[1493] Aleutian Basin
place
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
UNH/CCOM-JHC > Center for Coastal and Ocean Mapping - Joint Hydrographic Center, University of New Hampshire
dataCentre
Global Change Master Directory (GCMD) Data Center Keywords
2020-01-09
publication
9.1
NASA Goddard Space Flight Center, Earth Science Data and Information System
https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
Global Change Master Directory (GCMD) Keywords
The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
information
custodian
otherRestrictions
Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
otherRestrictions
Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
otherRestrictions
Cite as: Dr. Ginger Barth. 2011: MGL111 Chirp - US Extended Continental Shelf Project: Bering Sea CHIRP High-Resolution Seismic Profile Data. NOAA National Centers for Environmental Information. Accessed [date].
otherRestrictions
open
MGL1111
2011-08-08
creation
MGL1111
largerWorkCitation
collection
eng
174.12081
-166.47889
53.89308
58.82082
2011-08-08
2011-09-02
Geophysical Trackline Data ArcGIS Map Service
2012-12-12
creation
NOAA National Centers for Environmental Information
https://ngdc.noaa.gov/mgg/geodas/trackline.html
Marine Geophysical Trackline Data at NCEI
Please see website for more information about Marine Geophysical Trackline Data.
information
publisher
NOAA National Centers for Environmental Information
https://ngdc.noaa.gov/geomag/aromag.shtml
Airborne Magnetic Data
Please see website for more information about airborne magnetic data.
information
publisher
NOAA National Centers for Environmental Information
https://noaa.maps.arcgis.com/home/item.html?id=9548e62e560d4fcc8183337c54124747
NOAA GeoPlatform Entry for Trackline Geophysical Data
NOAA GeoPlatform listing for Trackline Geophysical Data
information
publisher
The Marine Trackline Geophysics database contains bathymetry, magnetics, gravity and seismic navigation data collected during marine cruises from 1939 to the present. Coverage is worldwide. Data sources include both US and foreign oceanographic institutions and government agencies. This map service shows tracks (both ship and airborne) for all geophysical surveys in the database, split into sub-layers by data type. This dynamic map service allows these sub-layers to be toggled on/off: All Survey Types (0) - visible by default; Bathymetry (1); Gravity (2); Magnetics (3); Multi-Channel Seismics (4); Seismic Refraction (5); Shot-Point Navigation (6); Side Scan Sonar (7); Single-Channel Seismics (8); Subbottom Profile (9); Aeromagnetic Surveys (10). Separate cached (tiled) map services are also available for several of these layers: All Survey Types (https://noaa.maps.arcgis.com/home/item.html?id=589adaec19ba48a9942ca9b13000c46d), Bathymetry (https://noaa.maps.arcgis.com/home/item.html?id=09dba3b48e8b49f4bcbf21f6e51ef6ed), Gravity (https://noaa.maps.arcgis.com/home/item.html?id=00cb8aa7607b4f11b78ef5a0e77921f5), Magnetics (https://noaa.maps.arcgis.com/home/item.html?id=09d6cfa8909545ddbfe93657ad761222), and Single-Channel Seismics (https://noaa.maps.arcgis.com/home/item.html?id=ff835a5df139428f992a6066151ffdda).
NCEI GIS Team
NOAA National Centers for Environmental Information
ncei.gis@noaa.gov
pointOfContact
DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS
DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
theme
Global Change Master Directory (GCMD) Service Keywords
2020-01-09
publication
9.1
NASA Goddard Space Flight Center, Earth Science Data and Information System
https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
Global Change Master Directory (GCMD) Keywords
The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
information
custodian
These data not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For official navigation products, please refer to the U.S. nautical charts available from the NOAA Office of Coast Survey: http://www.nauticalcharts.noaa.gov.
ArcGIS Map Service
10.7
1
-180
180
-90
90
tight
ArcGIS Server REST endpoint for dynamic map service
https://gis.ngdc.noaa.gov/arcgis/rest/services/web_mercator/trackline_combined_dynamic/MapServer
http
http://www.geoplatform.gov/spec/esri-map-rest
Geophysical Trackline Data ArcGIS Dynamic Map Service
REST endpoint for Geophysical Trackline Data dynamic map service
search
WMS Get Capabilities
https://gis.ngdc.noaa.gov/arcgis/services/web_mercator/trackline_combined_dynamic/MapServer/WMSServer?request=GetCapabilities&service=WMS
http
http://opengis.net/spec/wms
Geophysical Trackline Data Web Map Service (WMS)
Capabilities document for Open Geospatial Consortium Web Map Service for Geophysical Trackline Data
search
NOAA National Centers for Environmental Information
ncei.info@noaa.gov
https://www.ncei.noaa.gov/contact
NCEI Contact Information
Information for contacts at NCEI.
information
distributor
In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Contact NCEI for other distribution options and instructions.
KEB, SEGY
Raw Knudsen SEG-Y Datagram
https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc.mgg.seismic:MGL1111_SubbottomProfiler/html
HTTPS
Metadata Landing Page
information
https://maps.ngdc.noaa.gov/viewers/geophysics/
Trackline Geophysical Data Viewer
An interactive map of tracklines providing access to marine geophysical survey data (bathymetry, gravity, magnetics, seismics), and aeromagnetic surveys in the archive.
search
https://www.ngdc.noaa.gov/trackline/request/?surveyIds=MGL1111
Request Trackline Data
Download seismic data from this cruise.
order
repository
NOAA National Centers for Environmental Information
NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
2015-04-22T00:00:00
dataset
Data Quality: The Knudsen operated continuously through the entire cruise except for OBS deployment and recovery stations when pinger systems were secured. Several data gaps occurred (on MCS lines 2,7 and 9) when the system stopped recording .segy format ¿ this missing data is recorded in the kea- keb format files.
asNeeded
Modified for compliance to NCEI Template v1.2.
Knudsen 2620
Sonar_CHIRP
receiverType: Sonar_CHIRP. sourceType: Sonar_CHIRP. acquisitionSystemName: Knudsen 2620. acquisitionSystemType: digital. seismicNavSystem: C-NAV 3050. surveyDatum: WGS84. shotInterval_inSecondsOrMeters: 5. sampleInterval_inMicroseconds: 167. sweepFrequency: 2 kHz to 5 kHz. recordLength_inSeconds: 0.27.
R/V Marcus G. Langseth
Marcus G. Langseth
The Marcus G. Langseth serves as the national seismic research facility for the United States academic research community. The R/V Marcus G. Langseth's unique seismic capability allows it to provide both 2D and 3D maps of the earth's structure miles below the seafloor. Utilizing the vessel's other capabilities, expeditions have collected sediment cores for understanding climate variations throughout the Earth'Âs history, sampled seawater for determining physical and chemical properties of the oceans, and deployed remotely operated vehicles (ROVs) for studying submarine volcanoes. Scientists and researchers from all over the world are encouraged to participate in research programs aboard the Langseth.
Lamont-Doherty Earth Observatory - Office of Marine Operations
(845) 359-2900
P.O. Box 1000
61 Route 9W
Palisades
NY
10964-1000
USA
director@ldeo.columbia.edu
resourceProvider
Kongsberg EM122 Multibeam Echosounder
EM122
Kongsberg Maritime
http://www.km.kongsberg.com/ks/web/nokbg0240.nsf/AllWeb/01FB0F22974EA50FC125715E002B2143?OpenDocument
Kongsberg EM122 information
Information on the Kongsberg EM122 multibeam sonar system
information
resourceProvider
Kongsberg EM122
Multibeam Echosounder
EM 122 multibeam echosounder is a high performance echosounder for deep water mapping with up to 288 simultaneous beams. The EM 122 is designed to perform seabed mapping to full ocean depth with an unsurpassed resolution, coverage and accuracy. The system is cost effective, reliable, and easily operated. The design of the EM 122 is based on more than 50 years of hydrographic experience with echo sounders, sonars and underwater positioning for civilian and military use. It is the latest model in a series of deep sea multibeam echo sounders started with the EM 12 in 1990 and followed by the EM 121 and the EM 120, of which about 40 systems are operational. It uses the same transducers as in the EM 120 but with new electronics and software. Compared with the EM 120 the EM 122 has up to four times the resolution in terms of sounding density through inclusion of multiping capability and more than twice the number of detections per swath. High density signal processing is a major improvement, to keep the acoustic footprint size small even for the outer beams in the swath. In typical ocean depths a sounding spacing of about 50 m across and along is achievable. The achievable swath width of the EM 122 is in the order of 30,000 m, or about 25% more than possible with the EM 120. This is obtained by using long FM chirps which gains about 15 dB in signal to noise ratio compared to CW pulses. The EM 122 is a complete system. All necessary sensor interfaces, data displays for quality control and sensor calibration, seabed visualization, and data logging are a standard part of the system, as is integrated seabed acoustical imaging capability (side scan). Including a higher frequency multibeam echo sounder such as EM 710 with the EM 122 system can give a total system solution meeting the strictest IHO requirements for all water depths. As proven with the EM 120, an accuracy of better than 0.2% of depth in deep waters is readily achievable with the EM 122.