2025-10-10T10:57:18.527

NotApplicable

2025-10-10T19:03:43.53

We begin the dive at the axis of the canyon at 356 m. We will navigate along the axis for approximately 100 m to a depth of 352 m. There we will retrieve our first set of push cores. Next, we will approach the south wall of the canyon. We will reach a relatively flat area at mid depth (242 m) where we will extract more push cores. We will continue our ascent to the edge of the canyon, crossing an arcuate escarpment. Outside the canyon, we will visit some unidentified mounds located 90 m south of the canyon edge. We will core again there. We expect to find a mixture of steep walls and gentler areas with mass transport deposits.

2025-10-11T10:36:24.089

NotApplicable

2025-10-11T11:41:54.933

We begin the dive at the axis of the canyon at 330 m. We will navigate along the axis for approximately 280 m to a depth of 322 m (waypoint 4). There, we will retrieve our first set of push cores and we will close 1 Niskin bottle. We approach the canyon north wall along a ridge. We will reach a relatively flat area at mid depth (waypoint 8, 280 m) where we will extract more push cores and close another Niskin bottle. Afterwards, we will keep climbing up the ridge until waypoint 14 (173 m water depth), where we will turn northwest and navigate along the canyon wall where outcrops are expected to be exposed. We will visit two depressions areas at waypoints 20 (191 m) and 22 (180 m). We then turn southeast following the canyon edge and finally reach other depressions at ways points 29 (160 m) and 30 (150 m). We will probably take sediment samples of the depressions. We expect to find a mixture of steep walls, gentler areas with mass transport deposits and morphological depressions that might be related to the dynamic of the currents.

2025-10-11T12:44:46.659

NotApplicable

2025-10-11T20:49:29.726

We begin the dive at the axis of the canyon at 330 m. We will navigate along the axis for approximately 280 m to a depth of 322 m (waypoint 4). There, we will retrieve our first set of push cores and we will close 1 Niskin bottle. We approach the canyon north wall along a ridge. We will reach a relatively flat area at mid depth (waypoint 8, 280 m) where we will extract more push cores and close another Niskin bottle. Afterwards, we will keep climbing up the ridge until waypoint 14 (173 m water depth), where we will turn northwest and navigate along the canyon wall where outcrops are expected to be exposed. We will visit two depressions areas at waypoints 20 (191 m) and 22 (180 m). We then turn southeast following the canyon edge and finally reach other depressions at ways points 29 (160 m) and 30 (150 m). We will probably take sediment samples of the depressions. We expect to find a mixture of steep walls, gentler areas with mass transport deposits and morphological depressions that might be related to the dynamic of the currents.

2025-10-15T09:14:33.984

NotApplicable

2025-10-15T18:53:39.155

We begin the dive at the axis of the canyon, at 364 m. We will proceed downslope along the axis for approximately 400 m to a depth of 384 m (waypoint 6). Between waypoints 1 and 6, pushcores and sediment samples will be taken. In addition, we will close a Niskin bottle. We will then approach the south wall of the canyon for 1.1 km (waypoints 6 to 12) until we reach a relatively flat area at 224 m, where we will extract a push core or take sediment samples (waypoint 12); another Niskin bottle will be closed here. We will then continue climbing up an outcrop to waypoint 14 (150 m water depth). This is where the continental shelf begins, where we will visit several unknown mounded features (waypoints 14-23) for about 2 km. In particular, the mound located at waypoint 16 showed signs of degassing during the SBP survey. There we will extract a set of push cores and 2 Niskin bottles will be closed before and after sampling. We expect to find different lithologies in the canyon axis, as we will cross two sectors with different valley widths, and then a mixture of steep walls, gentler areas with mass transport deposits, and unknown mounds at the continental shelf that could be related to bubbles, sources of the observed instability at the canyon walls.

2025-10-20T09:09:34.936

NotApplicable

2025-10-20T18:44:58.773

We begin the dive at the axis of the canyon, at water depth 0f 310. We will proceed downslope along ­the axis for approximately 440 m to a depth of 344 m (waypoint 4). Between wp 2 and wp 4 , the terrain shows a 7 m step and then a wavy surface. Pushcores and sediment samples will be taken here. In addition, we will close a Niskin bottle at wp4. We will then approach the north wall of the canyon for 570 m (waypoints 4 to 8) until we reach a relatively flat area (wp8-wp9) at 320 m, where we will extract a push core or take sediment samples; another Niskin bottle will be closed at wp9. We will then continue climbing up and reach a terrace (wp11-wp12) at 240 m, where we will extract other push cores and close a Niskin bottle. From wp 12 to wp13, we will probably visit an outcrop until we reach the flat area of the continental shelf (wp13, 167 m). Here, we will start fast transit until wp 18 for approximately 1 km. We will then come across irregular depressions (wp18-19 and wp 21) probably originated by the keels of drifting icebergs (ploughmarks) and located at about 157 -158 m. We will end the dive crossing a steep scarp 7 m high (wp22-23). Push cores and sediment samples will be obtained in this sector of the continental shelf, and a Niskin bottle will be closed at wp23. We expect to find different morphologies in the canyon axis, a mixture of steep walls and two flat areas along the canyon flank, and ploughmarks on the continental shelf.

2025-10-25T10:56:51.651

NotApplicable

2025-10-25T20:06:26.044

We begin the dive at the axis of the canyon, at a depth of 715 m. We will ascend along the axis for approximately 590 m to a depth of 663 m (wp4). Along this route, sediment samples will be taken using the pushcorer. A Niskin bottle will be closed at wp1. We will then approach the north wall of the canyon for 845 m (wp4-8) until we reach a flat terrace (wp8-12) located between 480 and 450 m. The terrace is crossed by a small channel, which we will cross at wp10 (487 m). Push cores will be extracted on the terrace and a Niskin bottle will be closed at wp9. We will then continue ascending a steep cliff (waypoints 12-17) from 450 to 190 m depth. Here we will enter the continental shelf, where we will cross some small-scale depressions (3-4 m deep) at wp18-19, wp21-22 and wp24. The water depth will remain between 170 and 174 m. Push cores and sediment samples will be obtained in this sector of the continental shelf, and a Niskin bottle will be closed at wp24. We expect to find an incised talweg at the canyon axis, a mixture of steep walls and one large relatively flat terrace along the canyon flank, and irregular depressions on the continental shelf, caused by iceberg impact or degassing processes.

2025-10-26T11:01:41.175

NotApplicable

2025-10-26T13:53:37.607

We begin the dive at the axis of the canyon, at a depth of 458 m. We will descend approximately 400 m to a depth of ~500 m (wp4). Along this route, sediment samples will be taken using the pushcores. A Niskin bottle will be closed at wp4. We will then approach the south wall of the canyon for 970 m (wp4-12). The flank is quite steep at times, showing a stepped morphology between wp 8 (249 m) and wp11 (204 m). We will observe the edge of the canyon wall from wp 11 (204 m) to wp 12 (205 m) following a horizontal flight. Subsequently, we will reach the flat domain of the continental shelf, where we will investigate the irregularities observed on the surface caused by several depressions and small reliefs that could be associated with autogenic carbonate concretions and black sediments corresponding to microbial mats (wp15, wp18-19, wp 21, wp 22-23, wp 24-25). Push cores and water samples (using Niskin bottles) will be obtained whenever black bacterial mats and bubbles are found. We expect to find an incised thalweg in the canyon axis, a fairly steep south wall of the canyon with outcrops at the upper edge of the wall, and irregular morphologies on the continental shelf associated with autogenic carbonate piles, local black bacterial mats, small tube worms, and bubbles from fluid seepage.