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Villinger, Heinrich; Grevemeyer, Ingo; Kaul, Norbert; Singh, Satish C (2025): Temperature vs depth profile at heat flux station HF1764 of RV MARIA S. MERIAN cruise MSM69 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.980488, In: Villinger, H et al. (2025): Marine heat flux measurements of RV MARIA S. MERIAN cruise MSM69 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.980610

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Published: 2025-04-24 • DOI registered: 2025-05-23

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Abstract:
The heat flux measurements presented in this report were made during expedition MSM69 on the German research vessel RV Maria S. Merian (November 14, 2017 to December 22, 2017). A total of 69 heat flux measurements (profile HF1760 to profile HF1767) were successfully carried out colocated with the iLAB reflexion seismic profile. The aim of the measurements was to investigate whether low-temperature hydrothermal fluids diffuse at the seafloor where the oceanic basement is not covered by sediments. While low heat flux measurements clearly show that cold seawater enters the subsurface, no diffuse leakage of hydrothermal fluids could be detected at any location.
Keyword(s):
Eastern Equatorial Atlantic; heat flux; iLAB seismic profile
Related to:
Villinger, Heinrich: MSM69 raw data archive of HF measurements HF1764. HF1764_T_vs_Depth.zip
References:
Grevemeyer, Ingo; Singh, Satish C; Villinger, Heinrich; Papenberg, Cord; Kaul, Norbert (2019): LITHOS-iLAB - Structure and Evolution of the Oceanic Lithosphere, Cruise No. MSM69, 14.11.2017 - 22.12.2017, Mindelo/Praia (Cape Verdes) - Mindelo (Cape Verdes). MARIA S. MERIAN-Berichte, Gutachterpanel Forschungsschiffe, MSM69, 62 pp, https://doi.org/10.2312/cr_msm69
Mehouachi, Fares; Singh, Satish C (2018): Water-rich sublithospheric melt channel in the equatorial Atlantic Ocean. Nature Geoscience, 11(1), 65-69, https://doi.org/10.1038/s41561-017-0034-z
Villinger, Heinrich; Tréhu, Anne M; Grevemeyer, Ingo (2010): 18. Seafloor Marine Heat Flux Measurements and Estimation of Heat Flux from Seismic Observations of Bottom Simulating Reflectors. In: Riedel, M, Willoughby, EC, Chopra, S (eds.), Geophysical Characterization of Gas Hydrates, Society of Exploration Geophysicists, 279-300, https://doi.org/10.1190/1.9781560802197.ch18
Further details:
Villinger, Heinrich; Grevemeyer, Ingo; Kaul, Norbert; Singh, Satish C (2025): Report on marine heat flux measurements made during research cruise MSM69 (LITHOS) on the German RV Maria S. Merian. MSM69_Heat_Flux_Report.pdf
Coverage:
Median Latitude: -1.208410 * Median Longitude: -5.584475 * South-bound Latitude: -1.240920 * West-bound Longitude: -5.592220 * North-bound Latitude: -1.175900 * East-bound Longitude: -5.576730
Date/Time Start: 2017-12-04T05:53:00 * Date/Time End: 2017-12-04T18:26:00
Minimum DEPTH, sediment/rock: 0.82 m * Maximum DEPTH, sediment/rock: 8.42 m
Event(s):
MSM69_79-1 (HF1764) * Latitude Start: -1.240920 * Longitude Start: -5.576730 * Latitude End: -1.175900 * Longitude End: -5.592220 * Date/Time Start: 2017-12-04T05:53:00 * Date/Time End: 2017-12-04T18:26:00 * Elevation: -5111.0 m * Campaign: MSM69 * Basis: Maria S. Merian * Method/Device: Heat-Flow probe (HF) * Comment: in the water
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Station labelStationVillinger, Heinrich
2 Sensor, numberSensor noVillinger, Heinrich
3 DEPTH, sediment/rockDepth sedmVillinger, HeinrichGeocode
4 Temperature, in rock/sedimentt°CVillinger, HeinrichHeat flow probe
5 Conductivity, thermalkW/m/KVillinger, HeinrichHeat flow probein situ
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
544 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Station		2 
Sensor no		3 
Depth sed [m]		4 
t [°C]		5 
k [W/m/K]
HF1764P0117.242.507
HF1764P0126.982.500
HF1764P0136.722.488
HF1764P0146.462.477
HF1764P0156.202.462
HF1764P0165.942.453
HF1764P0175.682.445
HF1764P0185.422.433
HF1764P0195.162.422
HF1764P01104.902.418
HF1764P01114.642.399
HF1764P01124.382.394
HF1764P01134.122.383
HF1764P01143.862.373
HF1764P01153.602.358
HF1764P01163.342.354
HF1764P01173.082.341
HF1764P01182.822.326
HF1764P01192.562.318
HF1764P01202.302.307
HF1764P01212.042.299
HF1764P0217.542.4590.81
HF1764P0227.282.4500.90
HF1764P0237.022.4400.90
HF1764P0246.762.4310.98
HF1764P0256.502.4210.97
HF1764P0266.242.4120.98
HF1764P0275.982.4040.84
HF1764P0285.722.3940.97
HF1764P0295.462.3850.95
HF1764P02105.202.3850.91
HF1764P02114.942.372
HF1764P02124.682.3640.91
HF1764P02134.422.3560.94
HF1764P02144.162.3490.93
HF1764P02153.912.3400.93
HF1764P02163.652.3310.89
HF1764P02173.392.3200.78
HF1764P02183.132.3110.81
HF1764P02192.872.3020.85
HF1764P02202.612.2950.83
HF1764P02212.352.2860.81
HF1764P0318.282.359
HF1764P0328.022.353
HF1764P0337.762.348
HF1764P0347.502.341
HF1764P0357.242.335
HF1764P0366.982.328
HF1764P0376.722.324
HF1764P0386.462.318
HF1764P0396.202.312
HF1764P03105.942.312
HF1764P03115.682.311
HF1764P03125.422.298
HF1764P03135.162.292
HF1764P03144.912.289
HF1764P03154.652.285
HF1764P03164.392.284
HF1764P03174.132.275
HF1764P03183.872.268
HF1764P03193.612.265
HF1764P03203.352.262
HF1764P03213.092.256
HF1764P0415.982.298
HF1764P0425.722.293
HF1764P0435.472.289
HF1764P0445.212.286
HF1764P0454.952.281
HF1764P0464.692.277
HF1764P0474.432.273
HF1764P0484.182.273
HF1764P0493.922.263
HF1764P04103.662.269
HF1764P04113.402.268
HF1764P04123.142.262
HF1764P04132.892.257
HF1764P04142.632.251
HF1764P04152.372.250
HF1764P04162.112.252
HF1764P04171.852.258
HF1764P04181.592.249
HF1764P04191.342.243
HF1764P04201.082.240
HF1764P04210.822.242
HF1764P0518.422.3020.90
HF1764P0528.162.2950.97
HF1764P0537.902.2900.95
HF1764P0547.642.2870.98
HF1764P0557.382.2830.97
HF1764P0567.122.2771.00
HF1764P0576.862.2740.94
HF1764P0586.602.2720.97
HF1764P0596.342.2650.92
HF1764P05106.082.2680.92
HF1764P05115.822.270
HF1764P05125.572.2610.95
HF1764P05135.312.2580.92
HF1764P05145.052.2570.87
HF1764P05154.792.2570.85
HF1764P05164.532.2520.89
HF1764P05174.272.2500.89
HF1764P05184.012.2450.88
HF1764P05193.752.2430.81
HF1764P05203.492.2410.85
HF1764P05213.232.2380.84
HF1764P0616.772.322
HF1764P0626.512.317
HF1764P0636.262.312
HF1764P0646.002.307
HF1764P0655.752.302
HF1764P0665.492.298
HF1764P0675.242.294
HF1764P0684.982.290
HF1764P0694.732.281
HF1764P06104.472.285
HF1764P06114.222.285
HF1764P06123.962.281
HF1764P06133.702.279
HF1764P06143.452.272
HF1764P06153.192.263
HF1764P06162.942.261
HF1764P06172.682.262
HF1764P06182.432.252
HF1764P06192.172.253
HF1764P06201.922.248
HF1764P06211.662.242
HF1764P0717.912.361
HF1764P0727.662.357
HF1764P0737.402.349
HF1764P0747.152.342
HF1764P0756.902.335
HF1764P0766.642.329
HF1764P0776.392.324
HF1764P0786.132.319
HF1764P0795.882.312
HF1764P07105.622.314
HF1764P07115.372.309
HF1764P07125.122.299
HF1764P07134.862.294
HF1764P07144.612.292
HF1764P07154.352.291
HF1764P07164.102.283
HF1764P07173.852.275
HF1764P07183.592.273
HF1764P07193.342.270
HF1764P07203.082.262
HF1764P07212.832.255
HF1764P0817.542.421
HF1764P0827.292.414
HF1764P0837.032.406
HF1764P0846.782.397
HF1764P0856.522.388
HF1764P0866.272.382
HF1764P0876.012.374
HF1764P0885.762.366
HF1764P0895.502.359
HF1764P08105.252.354
HF1764P08114.992.347
HF1764P08124.742.338
HF1764P08134.482.332
HF1764P08144.232.325
HF1764P08153.972.318
HF1764P08163.722.314
HF1764P08173.462.303
HF1764P08183.212.297
HF1764P08192.952.289
HF1764P08202.702.281
HF1764P08212.442.272