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'™s 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.