FN Archimer Export Format PT J TI A dual sensor device to estimate fluid flow velocity at diffuse hydrothermal vents BT AF SARRAZIN, Jozee RODIER, Philippe TIVEY, M. K. SINGH, H. SCHULTZ, A. SARRADIN, Pierre-Marie AS 1:1;2:1;3:2;4:2;5:3;6:1; FF 1:PDG-DOP-DCB-EEP-LEP;2:PDG-DOP-DCB-EEP-LEP;3:;4:;5:;6:PDG-DOP-DCB-EEP; C1 IFREMER, Ctr Brest, Dept Etud Ecosyst Profonds, Lab Environm Profond, F-29280 Plouzane, France. Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA. Coll Ocean & Atmospher Sci, Corvallis, OR 97331 USA. C2 IFREMER, FRANCE WOODS HOLE, USA COLL OCEAN & ATMOSPHER SCI, USA SI BREST SE PDG-DOP-DCB-EEP-LEP PDG-DOP-DCB-EEP IN WOS Ifremer jusqu'en 2018 copubli-int-hors-europe IF 2.593 TC 22 UR https://archimer.ifremer.fr/doc/2009/publication-7299.pdf LA English DT Article CR EXOMAR MOMARETO MOMARSAT : MONITORING THE MID ATLANTIC RIDGE BO Unknown DE ;Diffuse flow;Video imagery;Hot film anemometer;Hydrothermal vent;Fluid flow velocity AB Numerous attempts have been made over the last thirty years to estimate fluid flow rates at hydrothermal vents, either at the exit of black smoker chimneys or within diffuse flow areas. In this study, we combine two methods to accurately estimate fluid flow velocities at diffuse flow areas. While the first method uses a hot film anemometer that performs high-frequency measurements, the second allows a relatively rapid assessment of fluid flow velocity through video imagery and provides in situ data to calibrate the sensor. Measurements of flow velocities on hydrothermal diffuse flow areas were obtained on the Mid-Atlantic Ridge (MAR). They range from 1.1 to 4.9 mm/s at the substratum level, in low-temperature (4.5-16.4 degrees C) diffuse flow areas from the Tour Eiffel sulfide edifice. A strong correlation was observed between fluid flow velocities and temperature, supporting the possible use of temperature as a proxy to estimate the flow rates in diffuse flow areas where such a simple linear flow/temperature relation is shown to dominate. PY 2009 PD NOV SO Deep Sea Research Part I: Oceanographic Research Papers SN 0967-0637 PU Elsevier VL 56 IS 11 UT 000271683200012 BP 2065 EP 2074 DI 10.1016/j.dsr.2009.06.008 ID 7299 ER EF