FN Archimer Export Format
PT J
TI High resolution seafloor thermometry for internal wave and upwelling monitoring using Distributed Acoustic Sensing
BT 
AF Pelaez Quiñones, Julián David
   Sladen, Anthony
   Ponte, Aurelien
   Lior, Itzhak
   Ampuero, Jean-Paul
   Rivet, Diane
   Meulé, Samuel
   Bouchette, Frédéric
   Pairaud, Ivane
   Coyle, Paschal
AS 1:1;2:1;3:2;4:3;5:1;6:1;7:4;8:5;9:2;10:6;
FF 1:;2:;3:PDG-ODE-LOPS-OC;4:;5:;6:;7:;8:;9:PDG-ODE-LOPS-OC;10:;
C1 Université Côte d’Azur, CNRS, Observatoire de la Côte d’Azur, IRD, Géoazur, Sophia Antipolis, 250 rue Albert Einstein, 06560, Valbonne, France
   IFREMER, Université de Brest, CNRS, IRD, Laboratoire d’Océanographie Physique et Spatiale, IUEM, Brest, France
   Institute of Earth Sciences, The Hebrew University, Jerusalem, Israel
   Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France
   Geosciences-M/GLADYS, Université de Montpellier, CNRS, Montpellier, France
   Aix-Marseille Université, CNRS/IN2P3, CPPM, Marseille, France
C2 UNIV NICE, FRANCE
   IFREMER, FRANCE
   UNIV HEBREW JERUSALEM, ISRAEL
   UNIV AIX MARSEILLE, FRANCE
   UNIV MONTPELLIER, FRANCE
   UNIV AIX MARSEILLE, FRANCE
SI BREST
SE PDG-ODE-LOPS-OC
UM LOPS
IN WOS Ifremer UMR
   DOAJ
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
IF 4.6
TC 0
UR https://archimer.ifremer.fr/doc/00856/96827/105414.pdf
   https://archimer.ifremer.fr/doc/00856/96827/105415.pdf
   https://archimer.ifremer.fr/doc/00856/96827/105702.pdf
LA English
DT Article
AB Temperature is an essential oceanographic variable (EOV) that still today remains coarsely resolved below the surface and near the seafloor. Here, we gather evidence to confirm that Distributed Acoustic Sensing (DAS) technology can convert tens of kilometer-long seafloor fiber-optic telecommunication cables into dense arrays of temperature anomaly sensors having millikelvin (mK) sensitivity, thus allowing to monitor oceanic processes such as internal waves and upwelling with unprecedented detail. Notably, we report high-resolution observations of highly coherent near-inertial and super-inertial internal waves in the NW Mediterranean sea, offshore of Toulon, France, having spatial extents of a few kilometers and producing maximum thermal anomalies of more than 5 K at maximum absolute rates of more than 1 K/h. We validate our observations with in-situ oceanographic sensors and an alternative optical fiber sensing technology. Currently, DAS only provides temperature changes estimates, however practical solutions are outlined to obtain continuous absolute temperature measurements with DAS at the seafloor. Our observations grant key advantages to DAS over established temperature sensors, showing its transformative potential for the description of seafloor temperature fluctuations over an extended range of spatial and temporal scales, as well as for the understanding of the evolution of the ocean in a broad sense (e.g. physical and ecological). Diverse ocean-oriented fields could benefit from the potential applications of this fast-developing technology. 
PY 2023
PD OCT
SO Scientific Reports
SN 2045-2322
PU Springer Science and Business Media LLC
VL 13
IS 1
UT 001085058900020
DI 10.1038/s41598-023-44635-0
ID 96827
ER

EF