EMSO / MAREGAMI Marmara bottom pressure and current records

Date 2021-06-08
Author(s) Henry Pierre1, Özeren SinanORCID2, Desprez De Gesincourt Olivier3, de Saint-Leger EmmanuelORCID3, Libes Maurice4, Çakir ZiyadinORCID5, Yakupoğlu NurettinORCID5, Geli LouisORCID6
Affiliation(s) 1 : Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, France
2 : Istanbul Technical University, Eurasia Institute of Earth Sciences, Maslak, Istanbul, Turkey
3 : CNRS, DT INSU, Parc national d’instrumentation océanographique, Plouzané, France
4 : Aix Marseille Univ, OSU Pytheas, Marseille, France
5 : Istanbul Technical University, Geological Engineering Dept., Maslak, Istanbul, Turkey
6 : IFREMER, Centre de Brest, Géosciences Marines, Plouzané, France
DOI 10.17882/78928
Publisher SEANOE
Abstract

EMSO is a European network of seabed and fixed-point water column observatories whose scientific objective is to acquire long time series in the seas around Europe for the study of environmental processes related to interactions between geosphere, biosphere and hydrosphere. MAREGAMI project (MARine Earthquake Gap Assessment and Monitoring for Istanbul) is a bilateral Turkish-French collaborative project coordinated by IFREMER and Istanbul Technical University and funded by ANR and TÜBITAK.

The goal of MAREGAMI was the development of new methods and monitoring strategies to assess earthquake and tsunami risks related to offshore faults, with tasks: (1) Marine geodesy: acquisition and processing of geodetic submarine data, (2) Hydrodynamics and specific depositional processes: water column data acquisition and hydrodynamic modeling, (3) Improving earthquake relocation with ocean bottom instruments, (4) Designing an optimal and sustainable network of submarine sensors.

Data distributed here were acquired for MAREGAMI Task 2.  These consist of time series acquired during 4 deployments on the sealfoor perfomed between January 2018 and November 2020 of an instrumented frame holding a RBR bottom pressure recorder (BPR) and a Seaguard recording current meter (RCM) equipped with additional sensors (conductivity, oxygen, tide pressure end temperature). The acquisition and distribution of marine data time series in the Sea of Marmara is funded by EMSO-France Research Infrastructure, EMSO-Link, and MAREGAMI projet. DT-INSU provided operational support and instrumentation.

Licence CC-BY
Sensor metadata

Data originate from an instrumented frame deployed for durations of about 6 months at different locations at the bottom of the Sea of Marmara deep basins. The instrumentation is autonomous and comprises

(1) a RBR bottom pressure recorder (BPR #52665) with a Paroscientific 0-2000 m Digiquartz sensor (#140758). The RBR pressure sampling interval was set to 5s. The instrument is set in horizontal position 0.70 m above the seafloor.

(2) a Seaguard recording current meter (RCM #155) equipped with doppler current sensor (Z-pulse DCS #146), pressure and temperature sensor (Aandera Tide 5217 #393), conductivity sensor (#788), oxygen sensor (Aandera optode #3127). The Seaguard RCM recording interval was set to 5 minutes (for all sensors) during deployments performed in 2018 and to 1 hour during deployments performed in 2019. The tide sensor is a piezoresistive sensor of accuracy comparable to that of the Digiquartz sensors (0.02% full scale vs 0.01% for Digiquartz), but of lower resolution 0.2 hPa (2 mm). The Z-Pulse sensor is 1.45 m above the seafloor, the tide sensor 1.35 m

The RBR system was acquired with MAREGAMI funding. DT-INSU loaned the Seaguard RCM. The tide sensor fit on the Seaguard RCM was acquired with EMSO funding.

Data

ERDDAP (updated dynamic data)

Data
File Size Format Processing Access
List of stations 592 bytes CSV Quality controlled data Open access
BPR1 - Jan 2018 to July 2018 - Bottom pressure recorder data 40 MB CSV Quality controlled data Open access
BPR2 - Nov 2018 to May 2019 - Bottom pressure recorder data 36 MB CSV Quality controlled data Open access
BPR2 - Nov & Dec 2018 - Seaguard recording current meter data 878 KB CSV Quality controlled data Open access
BPR3 - May 2019 to Nov 2019 - Bottom pressure recorder data 39 MB CSV Quality controlled data Open access
BPR3 - May 2019 to Nov 2019 - Seaguard recording current meter data 546 KB CSV Quality controlled data Open access
BPR4 - Nov 2019 to March 2020 - Bottom pressure recorder data 29 MB CSV Quality controlled data Open access
BPR4 - Nov 2019 to Apr 2020 - Seaguard recording current meter data 302 KB CSV Quality controlled data Open access
Top of the page

How to cite 

Henry Pierre, Özeren Sinan, Desprez De Gesincourt Olivier, de Saint-Leger Emmanuel, Libes Maurice, Çakir Ziyadin, Yakupoğlu Nurettin, Geli Louis (2021). EMSO / MAREGAMI Marmara bottom pressure and current records. SEANOE. https://doi.org/10.17882/78928