Event label Optional label Method/Device Abbreviation O2A Registry URI Date/Time Latitude Longitude Elevation Date/Time end Latitude end Longitude end Elevation end Comment M56/2-track Underway cruise track measurements CT 2002-12-06T00:00:00 0.39850 9.43610 2002-12-29T00:00:00 -33.90680 18.43370 Libreville - Cape Town M56/2_2 M56B_2 Water sample WS 2002-12-08T00:00:00 -3.77000 9.12000 GeoB8201-1 Ocean Floor Observation System OFOS 2002-12-08T21:58:00 -4.81200 9.90167 -3118 2002-12-09T06:50:00 -4.81283 9.91683 Video- and CTD profiles over ground, CH4-sensor GeoB8201-2 Multicorer with television TVMUC 2002-12-09T10:47:00 -4.76250 9.90483 -3110 Clam field, heat flow sensor, 5 tubes, olive mud, black layer, shells and fragments, carbonates GeoB8201-3 Multicorer with television TVMUC 2002-12-09T13:28:00 -4.81383 9.90400 -3121 Clam field, 8 tubes, olive mud, H2S odour, black layer, carbonates, no molluscs GeoB8201-4 Multicorer with television TVMUC 2002-12-09T20:12:00 -4.81367 9.90367 -3122 Clam field, heat flow sensor, 5 tubes, olive mud, H2S odour, mollusc fragm., carbonates, clams GeoB8202-1 Ocean Floor Observation System OFOS 2002-12-09T23:09:00 -4.80867 9.90833 -3111 2002-12-10T08:58:00 -4.81183 9.92750 Video profiles over ground, CH4-sensor GeoB8203-1 Television-Grab TVG 2002-12-10T11:45:00 -4.80950 9.90850 -3110 Olive mud, H2S odour, Pogonophoren, carbonates, thin crusts, few clam shells GeoB8203-2 Gravity corer GC 2002-12-10T17:12:00 -4.80950 9.90833 -3112 Banana, olive mud, gas hydrates > 1 m core depth, strong gas release from liners, H2S odour, carbonates, upper 1.5 m missing GeoB8203-3 Gravity corer GC 2002-12-10T20:24:00 -4.80933 9.90850 -3116 Olive mud, gas hydrates > 5 m core depth, strong gas release from liners, H2S odour, carbonates, heat flow GeoB8203-4 Miniaturized temperature logger MTL 2002-12-10T23:37:00 -4.81450 9.88500 -3131 2002-12-11T09:44:00 -4.81450 9.92517 -3127 HF transect Hydrate Hole, 6 m Lancet with T-sensors GeoB8204-1 Gravity corer GC 2002-12-11T11:46:00 -4.81383 9.90383 -3114 Olive mud, carbonates, 3 shell layers at different core depths, heat flow GeoB8205-1 Gravity corer GC 2002-12-12T11:51:00 -4.81383 9.92467 -3120 Olive mud, H2S odour in CC, heat flow GeoB8205-2 Gravity corer GC 2002-12-12T14:26:00 -4.81333 9.92417 -3118 Olive mud, gas hydrates > 1 m core depth, strong gas release from liners, H2S carbonates, heat flow GeoB8206-1 Multicorer with television TVMUC 2002-12-13T10:12:00 -4.81300 9.92383 -3115 Clam field, 8 tubes, olive mud, living clams in surface 0-8 cm, 2-9 cm black layer, H2S odour, broken mollusc shells GeoB8206-2 Television-Grab TVG 2002-12-13T15:21:00 -4.81300 9.92383 -3115 Grab open, only sediment remnants, olive mud with carbonates GeoB8207-1 Television-Grab TVG 2002-12-13T17:44:00 -4.80983 9.90850 -3109 Olive mud, carbonate, H2S odour GeoB8208-1 Ocean Floor Observation System OFOS 2002-12-13T21:08:00 -4.76183 9.94100 -3130 2002-12-14T06:32:00 -4.76367 9.93833 -3126 Video- and CTD profiles over ground, CH4-sensor GeoB8208-2 Television-Grab TVG 2002-12-14T09:14:00 -4.76017 9.94217 -3120 Olive mud, black layers, carbonates, mollusc shells GeoB8208-3 Gravity corer GC 2002-12-14T12:32:00 -4.76117 9.93967 -3127 Olive mud, surface 0-10 cm in weight set GeoB8208-4 Gravity corer GC 2002-12-14T15:05:00 -4.76017 9.94033 -3121 Olive mud, surface 0-20cm lost, gas hydrates > 6m core depth, strong gas release, H2S odour, carbonates, gas voids GeoB8209-1 Gravity corer GC 2002-12-14T17:59:00 -4.80933 9.90800 -3111 Olive mud, gas hydrates > 4 m core depth, carbonates at the surface, H2S odour, gas voids, Plastic foil instead of liner GeoB8209-2 Miniaturized temperature logger MTL 2002-12-14T20:04:00 -4.80650 9.89717 -3111 2002-12-15T07:54:00 -4.82833 9.97000 -3098 HF transects Hydrate and Black Holes, 6 m Lancet with T-sensors GeoB8209-3 CTD/Rosette CTD-RO 2002-12-15T11:37:00 -4.81117 9.90333 -3110 2002-12-15T14:06:00 -4.80883 9.91183 -3107 Bottom profile Hydrate Hole, 11x10L for CH4, tritium, 14x90ml for stable isotopes d180, d13C, CTD 20 m above ground GeoB8209-4 Gravity corer GC 2002-12-15T15:14:00 -4.80933 9.90750 -3110 Olive mud, surface through weight set, foraminifera, few carbonates, H2S odour, Plastic foil instead of liner GeoB8209-5 Gravity corer GC 2002-12-15T17:08:00 -4.80933 9.90700 -3111 Olive mud, surface through weight set, carbonate layers, H2S odour, Plastic foil instead of liner GeoB8209-6 Gravity corer GC 2002-12-15T18:56:00 -4.80933 9.90633 -3110 Olive mud, surface in weight set, H2S odour, strongly bioturbated, Plastic foil instead of liner GeoB8209-7 Miniaturized temperature logger MTL 2002-12-15T21:20:00 -4.80333 9.91000 -3113 2002-12-16T04:08:00 -4.82667 9.91000 -3103 HF transect 2 Hydrate Hole, 6 m Lancet with T-sensors GeoB8210-1 CTD/Rosette CTD-RO 2002-12-16T07:32:00 -4.81367 9.92283 -3113 2002-12-16T08:39:00 -4.81617 9.93050 -3105 Bottom profile Black Hole, 12x10L for CH4, tritium, 15x90ml for stable isotopes d180, d13C, rope length always 3050 m GeoB8211-1 Gravity corer GC 2002-12-16T10:24:00 -4.80917 9.90917 -3110 Olive mud, surface in weight set, gas hydrates > 3 m core depth, strong gas release, H2S odour, gas voids, Plastic foil instead of liner GeoB8211-2 Gravity corer GC 2002-12-16T12:35:00 -4.80933 9.90883 -3111 Olive mud, sediment surface in weight set, carbonates in top 30 cm, gas hydrates below the top 30 cm, very strong gas release, 6 m gas void, gas hydrates > 6 m GeoB8211-3 Gravity corer GC 2002-12-16T15:06:00 -4.80933 9.90967 -3110 Olive mud, gas hydrates in CC GeoB8212-1 Television-Grab TVG 2002-12-17T15:38:00 -4.80933 9.90933 -3110 Olive mud, carbonates, H2S odour, snails GeoB8212-2 Television-Grab TVG 2002-12-17T18:02:00 -4.80933 9.90833 -3113 Olive mud, carbonates large, Pogonophores, black layers, strong gas release, H2S odour GeoB8212-3 Television-Grab TVG 2002-12-17T20:28:00 -4.80950 9.90950 -3109 Olive mud, carbonates very large, black layers, H2S odour GeoB8212-4 Miniaturized temperature logger MTL 2002-12-17T23:27:00 -4.75833 9.92500 -3131 2002-12-18T08:46:00 -4.78000 9.94000 -3107 HF profile Worm Hole, 6 m Lancet with T-sensors M56/2_23 M56B_23 Water sample WS 2002-12-18T00:00:00 -4.81000 9.91000 GeoB8212-5 Gravity corer GC 2002-12-18T11:48:00 -4.80933 9.90933 -3112 Olive mud, many carbonates in top 20 cm, strong gas release, gas voids, gas hydrates > 4 m GeoB8213-1 Gravity corer GC 2002-12-18T14:05:00 -4.78583 9.94250 -3112 Olive mud, surface through weight set, no samples GeoB8213-2 Gravity corer GC 2002-12-18T16:23:00 -4.78583 9.94250 -3109 Olive mud, H2S odour in CC GeoB8214-1 Gravity corer GC 2002-12-20T02:28:00 -5.18000 10.43650 -2401 Olive hemipelagic mud, foraminifera, pteropods, H2S odour in CC M56/2_34 M56B_34 Water sample WS 2002-12-21T00:00:00 -6.28000 10.47000 GeoB8215-1 Ocean Floor Observation System OFOS 2002-12-21T05:45:00 -6.20000 10.43333 -2392 2002-12-21T11:11:00 -6.18333 10.42167 -2397 Video- and CTD profiles over ground, CH4-sensor GeoB8215-2 Television-Grab TVG 2002-12-21T13:26:00 -6.18400 10.42550 -2417 Clam field, completely filled with carbonates in olive mud, plenty of dead molluscs, 1 shovel broken, oily films GeoB8215-3 Gravity corer GC 2002-12-21T17:02:00 -6.18383 10.42550 -2412 Olive mud, sediment surface through weight set, few molluscs, only PW samples, Plastic foil instead of liner GeoB8215-4 Gravity corer GC 2002-12-21T18:40:00 -6.18400 10.42567 -2415 Olive mud, sediment surface through weight, only PW samples, few carbonates, Plastic foil instead of liner GeoB8215-5 Gravity corer GC 2002-12-21T20:47:00 -6.18317 10.42517 -2412 Olive mud, top 150 cm in weight set, foraminifera, mollusc shells & fragments, bitumen like pellets M56/2_37 M56B_37 Water sample WS 2002-12-22T00:00:00 -9.90000 10.87000 GeoB8216-1 Gravity corer GC 2002-12-22T02:24:00 -6.77850 10.64467 -2222 Olive-grey hemipelagic mud, silty, foraminifera, few pteropods M56/2_43 M56B_43 Water sample WS 2002-12-24T00:00:00 -15.40000 11.30000 M56/2_47 M56B_47 Water sample WS 2002-12-24T00:00:00 -18.23000 11.58000 M56/2_53 M56B_53 Water sample WS 2002-12-26T00:00:00 -22.99000 13.17000 M56/2_57 M56B_57 Water sample WS 2002-12-26T00:00:00 -26.10000 14.12000