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        "nav_equip_type":"Decca Main Chain",
        "confidentiality":"unclassified (open file)",
        "restitle":"Geochemical and Sampling Survey S1/72/02: Bristol Channel: Gamma Spectrometer (16/Sep/1972 to 01/Oct/1972)",
        "geophys_equip_type":null,
        "accessuse_restric":"unrestricted use, copyright acknowledgement",
        "ship":"Observer",
        "samp_equip_type":"Corer: Rock Gravity, Corer: Sediment Gravity, Grab: Shipek",
        "terms_of_use":"Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced British Geological Survey materials \"Contains British Geological Survey materials \u00a9UKRI [year]\"",
        "client":"British Geological Survey",
        "start_date":"1972-09-16T00:00:00",
        "terms_of_use_url":"http://nationalarchives.gov.uk/doc/open-government-licence/version/3/",
        "mdfileid_nerc_guid":"0dc94183-0ce8-2a16-e054-002128a47908",
        "contractor":"British Geological Survey",
        "start_date_est":"Real",
        "cruise_area":"CP2 Regional Sea Boundaries: Western Channel & Celtic Sea, Offshore 1:250k: Bristol Channel, SeaVoX Sub-Ocean: BRISTOL CHANNEL",
        "end_date":"1972-10-01T00:00:00",
        "cruise_data_url":null,
        "abstract":"This marine geochemical and sampling survey undertaken by Istititute of Geological Sciences (BGS) in conjuction with AERE, Harwell took place September to October 1972 in the Bristol Channel on m.v. Observer. This involved calibration of a sea-bed gamma spectometer towed over an area of relatively well known geology north-east of Lundy with subsequent work in the lesser known area of Bridgwater Bay. In the latter area, gravity cores were taken to calibrate the spectometer.",
        "end_date_est":"Real",
        "cruise":"SI/72/02",
        "additional_info":"For more detailed information on the acquisition equipment and data collection techniques, operational standards, data processing methods and quality control procedures used on this survey see the Report of Survey/Cruise Report and associated documentation where available. The information available may vary depending on the age of the survey. Data are checked and loaded to the BGS Coastal and Marine data management system following BGS marine data management procedures."
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