Multibeam bathymetry raw data (Kongsberg EM 122 entire dataset) of RV SONNE during cruise SO278
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2021
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| _version_ | 1867171024285466624 |
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| author | Bohrmann, Gerhard Gaide, Stefanie |
| author_facet | Bohrmann, Gerhard Gaide, Stefanie |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | During the RV SONNE cruise SO278, which took place between 2020-10-12 to 2020-12-01 bathymetry data based on multibeam echosounder (MBES) was recorded. Investigations on mud volcanoes were carried out in four working areas: the Sartori mud volcano in the Calabrian Arc, the Cobblestone Area, the Olimpi Mud Volcano Field and the United Nation Ridge. The hull-mounted KONGSBERGER EM122 multibeam echosounder systems was used in the areas of interest. This echosounder system uses nominal sounding frequencies of 10.5 to 13 kHz and was therefore used in water depth of more than 700 m. 288 beams with an acoustical footprint of 0.5°(TX)/1°(RX) are formed for each ping. Due to the use of the high-density equidistant and dual swath mode 864 soundings can be received with each ping. During the cruise the swath width was set to 120° and partly to 130°. For further information consult https://www.km.kongsberg.com/. During the SO278 due to a problem the pre-amplifier unit has been turned off and the resolution had to be reduced to RX=2°. The system worked from then on, however,the dual swath mode could not be used as half of the swath would have gaps every second ping. The data recorded the first days of the cruise revealed therefore relatively bad quality. Although from this modification on the system worked stable and produced better bathymetric data, the water column was continuously noisy, especially in the central sectors, which clearly limited the possibility to detect water column anomalies. Nevertheless over 3580 nautical miles in Italian and Greek waters have been mapped. Sound velocity profiles (SVP) were applied on the data for data calibration. SVP raw data are part/not part of this dataset publication. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_927272 |
| institution | PANGAEA |
| language | en |
| publishDate | 2021 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Multibeam bathymetry raw data (Kongsberg EM 122 entire dataset) of RV SONNE during cruise SO278 Bohrmann, Gerhard Gaide, Stefanie Binary Object; Binary Object (File Size); Binary Object (Media Type); Center for Marine Environmental Sciences; CTD/Rosette; CTD-RO; Data file recording distance; Data file recording duration; DATE/TIME; ELEVATION; EM122; EM122 multibeam echosounder; Event label; File content; FRINGE; GeoB24304-1; GeoB24339-1; GPF 19-2-007H; LATITUDE; LONGITUDE; MARUM; Mediterranean Ridge; Mudvolcanoes; Number of pings; Ship speed; SO278; SO278_0_Underway-1; SO278_39-1; SO278_4-1; Sonne_2; Start of data file, depth; Start of data file, heading; Start of data file recording, date/time; Start of data file recording, latitude; Start of data file recording, longitude; Stop of data file, depth; Stop of data file, heading; Stop of data file recording, date/time; Stop of data file recording, latitude; Stop of data file recording, longitude During the RV SONNE cruise SO278, which took place between 2020-10-12 to 2020-12-01 bathymetry data based on multibeam echosounder (MBES) was recorded. Investigations on mud volcanoes were carried out in four working areas: the Sartori mud volcano in the Calabrian Arc, the Cobblestone Area, the Olimpi Mud Volcano Field and the United Nation Ridge. The hull-mounted KONGSBERGER EM122 multibeam echosounder systems was used in the areas of interest. This echosounder system uses nominal sounding frequencies of 10.5 to 13 kHz and was therefore used in water depth of more than 700 m. 288 beams with an acoustical footprint of 0.5°(TX)/1°(RX) are formed for each ping. Due to the use of the high-density equidistant and dual swath mode 864 soundings can be received with each ping. During the cruise the swath width was set to 120° and partly to 130°. For further information consult https://www.km.kongsberg.com/. During the SO278 due to a problem the pre-amplifier unit has been turned off and the resolution had to be reduced to RX=2°. The system worked from then on, however,the dual swath mode could not be used as half of the swath would have gaps every second ping. The data recorded the first days of the cruise revealed therefore relatively bad quality. Although from this modification on the system worked stable and produced better bathymetric data, the water column was continuously noisy, especially in the central sectors, which clearly limited the possibility to detect water column anomalies. Nevertheless over 3580 nautical miles in Italian and Greek waters have been mapped. Sound velocity profiles (SVP) were applied on the data for data calibration. SVP raw data are part/not part of this dataset publication. |
| title | Multibeam bathymetry raw data (Kongsberg EM 122 entire dataset) of RV SONNE during cruise SO278 |
| topic | Binary Object; Binary Object (File Size); Binary Object (Media Type); Center for Marine Environmental Sciences; CTD/Rosette; CTD-RO; Data file recording distance; Data file recording duration; DATE/TIME; ELEVATION; EM122; EM122 multibeam echosounder; Event label; File content; FRINGE; GeoB24304-1; GeoB24339-1; GPF 19-2-007H; LATITUDE; LONGITUDE; MARUM; Mediterranean Ridge; Mudvolcanoes; Number of pings; Ship speed; SO278; SO278_0_Underway-1; SO278_39-1; SO278_4-1; Sonne_2; Start of data file, depth; Start of data file, heading; Start of data file recording, date/time; Start of data file recording, latitude; Start of data file recording, longitude; Stop of data file, depth; Stop of data file, heading; Stop of data file recording, date/time; Stop of data file recording, latitude; Stop of data file recording, longitude |
| url | https://doi.org/10.1594/PANGAEA.927272 |