CAMBIOS Tomography data: level 1 to 3

Date 2016-02-10
Temporal extent 1997-07-10 -1998-03-31
Author(s) Terre Terrillon Thierry1, Gaillard FabienneORCID1
Affiliation(s) 1 : Ifremer, France
DOI 10.17882/42368
Publisher SEANOE
Abstract The primary tomography data are the full reception window received and stored by the tomography receiver. The processing includes the extraction of the acoustic signal transmitted by the source, the correction due to mooring motion and clock drift. Then, the arrival time of the signal along the different paths have to be identified.
Changes in the soure-to-receiver travel time along the different ray path are due to changes in te ocean sound velocity structure, mainly related to temperature.
In the Canary basin, due to the strong anomaly produced by the Mediterranean water, we first observe a leading, unresolved packet, followed by a few resolved refracted ray arrivals, and at last some bottom reflected rays.
Licence CC-BY
Utilisation The data formats are described in : Terre 2001: A data format for tomography. Octopus group.
File Size Format Processing Access
Level 1 and level 2 tomography data 665 MB NC, NetCDF Processed data Open access
Level 3 data: tracked arrival times and leading packet 481 KB .mat Processed data Open access
Context files (instruments, network and ocean environement) 2 MB NC, NetCDF ancillary data Open access
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