Nansen Legacy Sub-bottom profiling and bathymetry mapping
pi_name: Katrine Husum/Tom Arne Rydningen/Matthias Forwick
Abstract
The listed data contains all the seismic profiles acquired during the Nansen paleo-cruise. Two systems were used: the Topas40 and SBP300. These use a linear FM-pulse with swept frequencies from 2 to 10 kHz (Topas) and 2.5 to 7.5 kHz (SBP300). Both systems produces a .RAW and .SGY-file during acquisition. The on-the-fly processing was kept to a minimum for both systems; only a matched filter was applied for the Topas, and a manual Time Varying Gain (TVG) for the display of both systems. It is recommended the .RAW-files are re-processed if areas of particular interest are to be studied in the future. Note that .raw- and .sgy lines have identical names for the Topas system, while they are sligthly different for the SBP300 system; the generation of sgy-files are delayed 2-3 seconds, and some .raw-files are split into several .sgy-files. Please look up the line log in the cruise report for further details.
pi_email: tom.a.rydningen@uit.no projectID: The Nansen Legacy (RCN #276730) pi_address: Norwegian Polar Institute, PO Box 6606, NO-9296 Tromsø recordedBy: Tom Arne Rydningen pi_institution: Norwegian Polar Institute/UiT - The arctic university of Norway
On coring site (NPAL14).
2018-11-05T13:39:43Z: Initial read in of the log files.
2018-11-05T16:10:57Z: Rewriting wrongly inherited fields
2019-04-23T13:15:11Z: Changed geartype from Topas40, SBP300 to SBP300 (Topas40 are put in new rows)
2021-08-12T07:26:17Z: Standardising PI names
2021-08-12T09:41:25Z: Standardising PI email and institutions
