Deutsches Ozeanographisches
Datenzentrum
Inventur der Meteor-Reise M154-2 (DOD-Ref-No.20190047)
Inventory of Meteor Cruise M154-2 (DOD-Ref-No.20190047)
Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
---|---|---|---|---|
Meteor | M154-2 | 29.04.2019 - 22.05.2019 | SEKT |
North Atlantic Ocean |
Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
---|---|---|---|---|---|
Huhn-Frehers Katrin | Universitat Bremen, Zentrum fur Marine Umweltwissenschaften | Pointe a Pitre (Guadeloupe) | Pointe a Pitre (Guadeloupe) |
Ziel der Reise / Objectives of Cruise:
Deep-seated collapses of volcanic islands have generated the largest volume mass flows worldwide. These mass flows might trigger mega-tsunamis. The way in which these collapse events are emplaced is poorly understood. Key questions such as whether they are emplaced in single or multiple events, how they may incorporate seafloor sediment to increase their volume, and how they are related to volcanic eruption cycles and migration of volcanic centres, remain to be answered. This project will form a part of the comprehensive study of large volcanic island landslide deposits and is directly linked to IODP drilling campaign in the Lesser Antilles (IODP Leg 340). Unfortunately, Leg 340 only recovered material from a single site within the volcanic landslide deposits off Montserrat, and even at this site recovery was not continuous. This single IODP site is insufficient to document lateral variation in landslide character, which is critical for understanding how it was emplaced. Combining 3D seismology (Leg 1) and MeBo cores (Leg 2) will provide a unique dataset of the internal structure, composition and source of material throughout a volcanic island landslide. The results will significantly contribute to understanding the emplacement of volcanic is-land landslides and they will allow us to assess the associated tsunami risk. The main scientific goals of this project are to determine where the landslides are sourced from; to understand how these landslides are emplaced; and to understand the relationship between landslides, eruption cycles and initiation of new volcanic centres.
Messungen / Measurements
Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
---|---|---|---|---|---|---|
MARUM | Huhn-Frehers Katrin | 25 | stations | G04 Core-soft bottom (no. of cores) |
Gravity cores | no |
MARUM | Huhn-Frehers Katrin | 6 | stations | G07 Drilling |
MeBo cores | no |
MARUM | Huhn-Frehers Katrin | 40 | profiles | G22 Bathymetry-wide beam (no.of nautical miles) |
Multibeam EM120 / EM70 seafloor mapping | yes |
MARUM | Huhn-Frehers Katrin | 40 | profiles | G22 Bathymetry-wide beam (no.of nautical miles) |
Parasound profiles | yes |
MARUM | Huhn-Frehers Katrin | 6 | stations | G31 Physical analysis of sediments |
MeBo cores | no |
MARUM | Huhn-Frehers Katrin | 25 | stations | G31 Physical analysis of sediments |
Gravity cores | no |
MARUM | Huhn-Frehers Katrin | 40 | profiles | G74 Multi-beam echosounding |
Multibeam EM120 / EM70 seafloor mapping | yes |
MARUM | Huhn-Frehers Katrin | 40 | profiles | G74 Multi-beam echosounding |
Parasound profiles | yes |
MARUM | Huhn-Frehers Katrin | 1 | n miles | H80 Other physical measurements |
Underway measurements during the whole trip such as coordinates, depth, meteorological parameter and so on | yes |
MARUM | Huhn-Frehers Katrin | 1 | meas. | M06 Routine standard measurements |
Analysen, meteorolog. Daten, Satelitenbilder, Trajektorien, Wetterberichte | yes |