{ "cdp_num": null, "comment": "The survey marker bolt is anchored\r\non the top of the concrete chimney\r\npillar No.1 in the Maelingarhus in\r\nHofn. The height of the chimey pillar\r\nNo.1 is 4.36 m. It is bolted to the\r\nbedrock. The antenna on the chimney\r\npillar is 4.47 m above the ground and\r\n1.4 m above the roof.", "conditions": [], "country": "Iceland", "country_code_ISO": "ISL", "date_from": "1997-05-27 00:00:00", "date_to": null, "description": "SURVEY MARKER BOLT", "geological": { "bedrock": { "condition": null, "type": null }, "characteristic": "BEDROCK", "distance_to_fault": null, "fault_zone": null, "fracture_spacing": null }, "iers_domes": "10204M002", "instrument_collocation": [ { "comment": "EUREF PILLAR.\r\nEUREFNW GPS camapign", "date_from": "1990-07-23 00:00:00", "date_to": "1990-07-28 00:00:00", "status": "MOBILE", "type": "GPS" }, { "comment": "Mobile VLBI Observations.\r\nOccupying system MV-2,\r\nmonument number 7635,\r\noccupation designator\r\n76355201", "date_from": "1992-07-20 00:00:00", "date_to": "1992-07-28 00:00:00", "status": "MOBILE", "type": "VLBI" }, { "comment": "EUREF PILLAR.\r\nISNET93 GPS camapaign", "date_from": "1993-08-03 00:00:00", "date_to": "1993-08-14 00:00:00", "status": "MOBILE", "type": "GPS" }, { "comment": "EUREF PILLAR.\r\nISLAND95 GPS Campaign", "date_from": "1995-07-17 00:00:00", "date_to": "1995-07-28 00:00:00", "status": "MOBILE", "type": "GPS" }, { "comment": "EUREF PILLAR.\r\nEUVN GPS Campaign\r\nAlso a GPS Campaign 1985,\r\ndates not known yet", "date_from": "1997-05-27 00:00:00", "date_to": "1997-05-28 00:00:00", "status": "MOBILE", "type": "GPS" }, { "comment": "Statens Kartverk Norway", "date_from": "1997-06-01 00:00:00", "date_to": null, "status": "PERMANENT", "type": "PRARE" } ], "local_ties": [ { "accuracy": null, "comment": null, "cpd_num": "7635", "date_at": null, "dx": 0, "dy": 0, "dz": 0, "iers_domes": "10204M001", "name": "VLBI PLATFORM", "survey_method": "TRIANGULATION", "usage": "VLBI" }, { "accuracy": null, "comment": null, "cpd_num": null, "date_at": null, "dx": 0, "dy": 0, "dz": 0, "iers_domes": "10204M003", "name": "CHIMNEY PILLAR NO. 2", "survey_method": "TRIANGULATION", "usage": "GPS" }, { "accuracy": null, "comment": null, "cpd_num": null, "date_at": null, "dx": 0, "dy": 0, "dz": 0, "iers_domes": "10204M004", "name": "PRARE PILLAR", "survey_method": "TRIANGULATION", "usage": "PRARE" }, { "accuracy": null, "comment": null, "cpd_num": null, "date_at": null, "dx": 0, "dy": 0, "dz": 0, "iers_domes": "10204M005", "name": "EUREF PILLAR", "survey_method": "TRIANGULATION", "usage": "GPS" } ], "location": { "city": "Hoefn", "coordinates": { "X": 2679689.9, "Y": -727950.9, "Z": 5722789.6, "altitude": 82.9, "lat": 64.26729442268656, "lon": -15.197914588460714 }, "country": "Iceland", "country_iso_code": "ISL", "description": "", "state": "", "tectonic": { "plate_name": "EURASIAN" } }, "logs": { "contact": "GOW Operator (gnss_wtz@bkg.bund.de)", "date": "2025-02-24 00:00:00", "log_type": "UPDATE", "modified": "UNAVAILABLE", "previous": "UNAVAILABLE", "title": "HOFN00ISL.xml" }, "marker": "HOFN", "monument": { "description": "PILLAR", "foundation": "CONCRETE BOLTED TO BEDROCK", "foundation_depth": 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}