FLUID3D-2
| Type | Oceanographic cruise |
|---|---|
| Ship | L'Europe |
| Ship owner | Ifremer |
| Dates | 19/08/2019 - 10/11/2019 |
| Chief scientist(s) | DANO Alexandre , GARZIGLIA Sébastien |
LABORATOIRE GEOAZUR - UMR 7329 / UR082 250 rue Albert Einstein CS 10269 Campus Azur 06905 Sophia-Antipolis +33 (0)4 92 94 26 02 |
|
| DOI | 10.17600/18000924 |
| Objective | In the frame of the ANR MODAL project, the first part of the FLUID3D-2 cruise onboard the R/V l'Europe was primarily planned to carry out various operations on instruments related to the EMSO-LIGURE-NICE cabled observatory, off the Nice Airport (Figure 1). These instruments aim at measuring various parameters to assess the contribution of fluid circulation and seismicity to the development of slope instabilities in the immediate surrounding of the area affected by a catastrophic landslide in October 1979. The first objective of the cruise was to deploy a seabed station hosting a seawater radioactivity sensor (KATERINA) together with a seismo-piezometer probe. As part of the Trans National Access programme of the EMSO-LINK project, both of these instruments from the MARUM marine geotechnics team had to be connected to the EMSO-LIGURE-NICE observatory. The second objective was to fully recover three piezometers which have been left measuring pore fluid pressures in sediments since 2014-2015. The pressure housings containing the data logger of two other piezometers had also to be replaced with new ones. Eventually, a new piezometer was planned to be deployed in the failure scar before being connected to the EMSO-LIGURE-NICE observatory. The third objective was to acquire acoustic water column data as a means of assessing the activity and distribution of fluid seeps.
|
