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Villinger, Heinrich; Grevemeyer, Ingo; Kaul, Norbert; Singh, Satish C (2025): Temperature vs depth profile at heat flux station HF1765 of RV MARIA S. MERIAN cruise MSM69 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.980502, 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
Other version:
Villinger, Heinrich: MSM69 raw data archive of HF measurements HF1765. HF1765_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: -1.707795 * Median Longitude: -7.629650 * South-bound Latitude: -1.716700 * West-bound Longitude: -7.669530 * North-bound Latitude: -1.698890 * East-bound Longitude: -7.589770
Date/Time Start: 2017-12-05T21:33:00 * Date/Time End: 2017-12-06T10:52:00
Minimum DEPTH, sediment/rock: -0.84 m * Maximum DEPTH, sediment/rock: 6.08 m
Event(s):
MSM69_80-1 (HF1765) * Latitude Start: -1.716700 * Longitude Start: -7.669530 * Latitude End: -1.698890 * Longitude End: -7.589770 * Date/Time Start: 2017-12-05T21:33:00 * Date/Time End: 2017-12-06T10:52:00 * Elevation Start: -4822.0 m * Elevation End: -4511.5 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:
710 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]
HF1765P0115.602.326
HF1765P0125.342.323
HF1765P0135.082.319
HF1765P0144.822.317
HF1765P0154.562.309
HF1765P0164.302.307
HF1765P0174.042.305
HF1765P0183.782.301
HF1765P0193.522.299
HF1765P01103.262.299
HF1765P01113.002.287
HF1765P01122.742.290
HF1765P01132.482.280
HF1765P01142.222.274
HF1765P01151.962.268
HF1765P01161.702.271
HF1765P01171.442.263
HF1765P01181.182.257
HF1765P01190.922.251
HF1765P01200.662.236
HF1765P01210.402.233
HF1765P0215.892.3840.85
HF1765P0225.632.3780.86
HF1765P0235.372.3710.87
HF1765P0245.112.3660.90
HF1765P0254.852.3580.85
HF1765P0264.592.3520.83
HF1765P0274.332.3460.77
HF1765P0284.072.3380.75
HF1765P0293.812.3320.76
HF1765P02103.552.3260.80
HF1765P02113.292.320
HF1765P02123.032.3160.82
HF1765P02132.772.3050.78
HF1765P02142.522.2980.77
HF1765P02152.262.2890.79
HF1765P02162.002.2870.80
HF1765P02171.742.2780.79
HF1765P02181.482.2710.74
HF1765P02191.222.2630.69
HF1765P02200.962.2540.70
HF1765P02210.702.2480.74
HF1765P0314.342.690
HF1765P0324.082.664
HF1765P0333.832.641
HF1765P0343.572.615
HF1765P0353.312.586
HF1765P0363.052.577
HF1765P0372.792.550
HF1765P0382.532.529
HF1765P0392.272.498
HF1765P03102.012.459
HF1765P03111.752.422
HF1765P03121.492.404
HF1765P03131.232.369
HF1765P03140.972.337
HF1765P03150.712.300
HF1765P03160.452.288
HF1765P03170.202.243
HF1765P0318-0.062.219
HF1765P0319-0.322.219
HF1765P0320-0.582.218
HF1765P0321-0.842.219
HF1765P0416.082.341
HF1765P0425.822.337
HF1765P0435.562.331
HF1765P0445.302.327
HF1765P0455.042.320
HF1765P0464.792.316
HF1765P0474.532.311
HF1765P0484.272.307
HF1765P0494.012.302
HF1765P04103.752.301
HF1765P04113.492.292
HF1765P04123.232.289
HF1765P04132.972.282
HF1765P04142.712.277
HF1765P04152.452.270
HF1765P04162.202.269
HF1765P04171.942.261
HF1765P04181.682.256
HF1765P04191.422.251
HF1765P04201.162.246
HF1765P04210.902.239
HF1765P0515.902.3460.76
HF1765P0525.642.3410.76
HF1765P0535.382.3350.78
HF1765P0545.132.3300.80
HF1765P0554.872.3230.80
HF1765P0564.612.3170.93
HF1765P0574.352.3140.90
HF1765P0584.092.3080.88
HF1765P0593.832.3040.89
HF1765P05103.572.3050.91
HF1765P05113.312.300
HF1765P05123.052.2970.80
HF1765P05132.792.2850.78
HF1765P05142.532.2780.83
HF1765P05152.272.2710.80
HF1765P05162.022.2690.78
HF1765P05171.762.2610.80
HF1765P05181.502.2550.80
HF1765P05191.242.2510.72
HF1765P05200.982.2440.70
HF1765P05210.722.2370.74
HF1765P0616.072.322
HF1765P0625.812.318
HF1765P0635.552.314
HF1765P0645.292.310
HF1765P0655.032.303
HF1765P0664.772.300
HF1765P0674.512.296
HF1765P0684.252.294
HF1765P0693.992.287
HF1765P06103.732.287
HF1765P06113.482.293
HF1765P06123.222.279
HF1765P06132.962.269
HF1765P06142.702.266
HF1765P06152.442.258
HF1765P06162.182.257
HF1765P06171.922.257
HF1765P06181.662.251
HF1765P06191.402.243
HF1765P06201.142.241
HF1765P06210.882.236
HF1765P0715.492.570
HF1765P0725.232.557
HF1765P0734.972.542
HF1765P0744.712.527
HF1765P0754.452.514
HF1765P0764.192.497
HF1765P0773.932.482
HF1765P0783.672.467
HF1765P0793.412.460
HF1765P07103.152.452
HF1765P07112.892.447
HF1765P07122.632.419
HF1765P07132.372.405
HF1765P07142.122.390
HF1765P07151.862.369
HF1765P07161.602.351
HF1765P07171.342.334
HF1765P07181.082.314
HF1765P07190.822.294
HF1765P07200.562.275
HF1765P07210.302.259
HF1765P0815.182.2880.86
HF1765P0824.922.2860.80
HF1765P0834.662.2810.74
HF1765P0844.412.2790.79
HF1765P0854.152.2740.82
HF1765P0863.892.2720.84
HF1765P0873.632.2700.83
HF1765P0883.372.2660.93
HF1765P0893.112.2610.86
HF1765P08102.852.2620.90
HF1765P08112.592.262
HF1765P08122.332.2570.86
HF1765P08132.072.2510.76
HF1765P08141.812.2470.77
HF1765P08151.552.2420.83
HF1765P08161.302.2410.77
HF1765P08171.042.2390.78
HF1765P08180.782.2360.82
HF1765P08190.522.2320.74
HF1765P08200.262.2300.70
HF1765P08210.002.2270.72
HF1765P0915.922.314
HF1765P0925.662.311
HF1765P0935.402.306
HF1765P0945.142.303
HF1765P0954.882.297
HF1765P0964.622.293
HF1765P0974.362.288
HF1765P0984.102.285
HF1765P0993.852.279
HF1765P09103.592.275
HF1765P09113.332.279
HF1765P09123.072.269
HF1765P09132.812.263
HF1765P09142.552.261
HF1765P09152.292.255
HF1765P09162.032.254
HF1765P09171.782.248
HF1765P09181.522.242
HF1765P09191.262.238
HF1765P09201.002.233
HF1765P09210.742.229
HF1765P1015.172.3260.89
HF1765P1024.912.3230.86
HF1765P1034.662.3180.87
HF1765P1044.402.3130.95
HF1765P1054.142.3070.83
HF1765P1063.882.3050.98
HF1765P1073.622.2980.91
HF1765P1083.362.2930.83
HF1765P1093.102.2880.84
HF1765P10102.842.2870.85
HF1765P10112.592.285
HF1765P10122.332.2750.85
HF1765P10132.072.2710.91
HF1765P10141.812.2640.90
HF1765P10151.552.2570.89
HF1765P10161.292.2560.84
HF1765P10171.032.2510.80
HF1765P10180.782.2460.80
HF1765P10190.522.2400.78
HF1765P10200.262.2360.74
HF1765P10210.002.2320.73