https://ogcapi.bgs.ac.uk/collections/offshore-survey-overview/items/193
type: Place
id: 193.0
prev: 192.0
next: 194.0
restitle: Geophysical Survey 1981/3: Southern North Sea (30/05/1981 to 21/07/1981)
geophys equip type: Airgun/Sleeve Gun, Echo Sounder, Gravimeter, Magnetometer, Pinger, Sidescan Sonar, Sparker, Surface Tow Boomer, Transit Sonar
terms of use: Varying conditions apply
ship: RRS Shackleton
client: British Geological Survey
start date: 1981-05-30T00:00:00
contractor: British Geological Survey
start date est: Estimated
cruise area: CP2 Regional Sea Boundaries: Northern North Sea, Southern North Sea, Offshore 1:250k: California, Dogger, Farne, Flemish Bight, Silver Well, Spurn, Swallow Hole, Tyne-Tees, SeaVoX Sub-Ocean: NORTH SEA
end date: 1981-07-21T00:00:00
cruise: 1981/3
abstract: Report: Brett, CP. 1981. Cruise Report on Project 81/03. A Regional Geophysical Survey in the Southern North Sea. (IGS Report No 119) The primary objective was to complete the geophysical survey of the Tyne-Tees, California and Silver Well sheets of the IGS 1:250000 map series in advance of bottom sampling programme.
end date est: Estimated
additional info: Navigation: Magnavox satellite navigation system integrated with MX610 doppler sonar and Arma Brown Mk I Mod 5 gyro compass. Dacca Mk 21 main chain receiver - optional integration with above. Equipment: Bolt 600B air gun, two guns with standard (1-40 cu.in.) range of chamber sizes, Krohn-hite bandpass filter, TSS Model 307 TVG amplifier and display on an EPC 3200 graphic recorder, Geomecanique hydrophone system. Atlas Deso 10 echo sounder with hull mounted transducers (33 and 210KHz) and Edig 10 digitiser unit. LaCoste & Romberg S75 air-sea gravity meter. World Wide land gravity meter for base ties. Varian proton magnetometer, cycling controlled by seismic control to eliminate sparker interference. EG&G sparker system, with up to 5kJ capability. One 3-element and one 9-element spark array, Krohn-hite bandpass filter, TSS Model 307 TVG amplifier, TSS Mobel 302 swell filter and display on an EPC 4600 or EPC 3200 graphic recorder, Teledyne hydrophone system. UDI AS350 dual channel side scan sonar system with catamaran tow fish, 2500ft tow cable and remote controlled winch. Display on an EPC 3200 graphic recorder and firing sequence controlled by the seismic control system. Kelvin Hughes MS47 transit sonar with hull mounted, 2 off - one port and one starboard scanning. Modified for dual operation and display on an EPC 3200 recorder. Firing sequence controlled by seismic system. Edo Western 248 pinger, 3.5 KHz, 10KW transducer in tow fish assembly. Used with TSS Model 302 swell filter, display on EPC graphic recorder. Huntec deep tow boomer system with remote contrilled winch, Krohn-hite bandpass filter and display on an EPC 3200 graphic recorder. For more detailed information see the Cruise Report.
confidentiality: unclassified (open file)
nav equip type: Decca Main Chain, Transit satellite
accessuse restric: unrestricted use, copyright acknowledgement
geometry: MultiPolygon
  coordinates: 0.564950412249513
  coordinates: 55.163004829577204
  coordinates: 0.563739646942276
  coordinates: 55.1630356840775
  coordinates: 0.562527712845702
  coordinates: 55.1630308017823
  coordinates: 0.561317827038206
  coordinates: 55.1629901956514
  coordinates: 0.560113201144573
  coordinates: 55.162913973473
  coordinates: 0.558917032785073
  coordinates: 55.1628023375763
  coordinates: 0.557732497062322
  coordinates: 55.1626555842929
  coordinates: 0.556562738108795
  coordinates: 55.162474103168
  coordinates: 0.55541086071778
  coordinates: 55.162258375923194
  coordinates: 0.554279922080281
  coordinates: 55.1620089751742
  coordinates: 0.55317292365011
  coordinates: 55.161726562906495
  coordinates: 0.5520928031590241
  coordinates: 55.161411888713296
  coordinates: 0.551042426803368
  coordinates: 55.1610657878004
  coordinates: 0.550024581623168
  coordinates: 55.160689178763896
  coordinates: 0.54904196809412
  coordinates: 55.160283061145
  coordinates: 0.548097192952285
  coordinates: 55.1598485127712
  coordinates: 0.547192762270677
  coordinates: 55.1593866868882
  coordinates: 0.546331074806219
  coordinates: 55.1588988090926
  coordinates: 0.545514415634776
  coordinates: 55.1583861740718
  coordinates: 0.544744950091198
  coordinates: 55.157850142161294
  coordinates: 0.5440247180304449
  coordinates: 55.1572921357269
  coordinates: 0.543355628424958
  coordinates: 55.156713635384
  coordinates: 0.542739454312564
  coordinates: 55.156116176061495
  coordinates: 0.542177828108173
  coordinates: 55.1555013429224
  coordinates: 0.541672237291571
  coordinates: 55.1548707671519
  coordinates: 0.541224020482569
  coordinates: 55.154226121623694
  coordinates: 0.540834363913693
  coordinates: 55.1535691164561
  coordinates: 0.540504298309545
  coordinates: 55.1529014944708
  coordinates: 0.540234696180832
  coordinates: 55.15222502656509
  coordinates: 0.535841958717726
  coordinates: 55.13972372074419
  coordinates: 0.5356570255234351
  coordinates: 55.1391284837102
  coordinates: 0.5355188951907309
  coordinates: 55.1385290931228
  coordinates: 0.535427843752319
  coordinates: 55.1379267559235
  coordinates: 0.535384052413183
  coordinates: 55.137322684933295
  coordinates: 0.535387607202772
  coordinates: 55.1367180964092
  coordinates: 0.535438498819005
  coordinates: 55.136114207595696
  coordinates: 0.538300976582376
  coordinates: 55.112937028560395
  coordinates: 0.538484143538775
  coordinates: 55.0993125383081
  coordinates: 0.532422198906885
  coordinates: 55.0838809700656
  coordinates: 0.5280295528297969
has geometry: MultiPolygon
geo: GeoShape
  polygon: 3.9944120717880898,52.259932308554 2.9257878630293797,52.2841233112706 2.925125013843,52.284141710512195 2.92242576029297,52.2842416536843 2.92129801934464,52.2843012975586 2.92017677586894,52.284396455247 2.91906500057544,52.2845268746336 2.9179656391558697,52.2846922101762 2.9168816044995,52.284892023819005 2.9158157689942796,52.2851257861499 2.9147709569340097,52.2853928778 2.91374993705101,52.28569259108 2.91275541519446,52.2860241318512 2.9117900271729797,52.2863866216238 2.91085633178077,52.28677909988 2.90995680402524,52.2872005266127 2.90909382857423,52.287649785075196 2.9082696934398897,52.2881256847345 -0.0335750804278897,54.024018135941795 -1.16902225353127,54.7002245985636 -1.169817934516,54.7007433977631 -1.17056646539798,54.701285226248 -1.17126586051633,54.701848648071895 -1.1719142641965599,54.70243217000159 -1.1725099556821301,54.7030342454677 -1.2742889981170298,54.8193209945493 -1.27477919724976,54.819954521822694 -1.27521228133332,54.8206017791674 -1.2755870995545,54.8212610507861 -1.33788858928536,54.9375349676048 -1.3382167176814699,54.9382026321998 -1.33848472283682,54.9388791358763 -1.33869189116523,54.9395626850652 -1.33883767028119,54.940251467427004 -1.33892167049654,54.940943656654795 -1.3417681621065498,54.9915020336343 -1.3417671737711399,54.9921959014929 -1.34170406054494,54.9928888199958 -1.3415789865977699,54.993578951552 -1.34139228045927,54.994264465867595 -1.3411444341810899,54.9949435448015 -1.3408361020645199,54.9956143871897 -1.34046809895658,54.996275213625694 -1.3400413981188601,54.9969242711835 -1.33955712867438,54.9975598380726 -1.33901657263893,54.9981802282091 -1.3384211615445698,54.998783795695196 -1.33777247266391,54.999368939190795 -1.33707222484498,54.999934106168695 -1.33632227396761,55.0004777970403 -1.33552460803318,55.000998569141494 -1.33468134190057,55.001495040567896 -1.3337947116823299,55.0019658938489 -1.33286706881574,55.0024098794512 -1.33190087382456,55.002825819102 -1.33089868978806,55.0032126089233 -1.32…
links: The landing page of this server as JSON
  type: json
  rel: root
  href: https://ogcapi.bgs.ac.uk
links: The landing page of this server as HTML
  type: html
  rel: root
  href: https://ogcapi.bgs.ac.uk
links: This document as JSON
  type: geo+json
  rel: alternate
  href: https://ogcapi.bgs.ac.uk/collections/offshore-survey-overview/items/193
links: This document as RDF (JSON-LD)
  type: ld+json
  rel: self
  href: https://ogcapi.bgs.ac.uk/collections/offshore-survey-overview/items/193
links: This document as HTML
  type: html
  rel: alternate
  href: https://ogcapi.bgs.ac.uk/collections/offshore-survey-overview/items/193
links: Offshore Survey Overview
  type: json
  rel: collection
  href: https://ogcapi.bgs.ac.uk/collections/offshore-survey-overview
links: ld+json
  rel: prev
  href: https://ogcapi.bgs.ac.uk/collections/offshore-survey-overview/items/192
links: ld+json
  rel: next
  href: https://ogcapi.bgs.ac.uk/collections/offshore-survey-overview/items/194