Summer, Sun, School

“Smoke under water” girls and their group leader in front of miniature models of the old and new research vessel RV Sonne. / „Smoke under water“ Mädels und ihre Projektbetreuerin vor den Miniaturmodellen des alten und neuen Forschungsschiff FS Sonne. (© M. Klischies)

  While others enjoyed the first week of their summer holidays and probably went to the beach, a bunch of dedicated high school kids from Schleswig-Holstein and other parts of Germany decided to come to Geomar and learn more about rocks, minerals and under water science. Last week, the department of “Magmatic and Hydrothermal Systems” […]

Radio Rock Research

The “radio receiver”: Seismic streamer array with hydrophones (underwater microphones) to record the low frequency sound waves that travelled from the airguns, through the seafloor and back to the sea surface. The streamer tube is just as thick as a roll of wrapping paper. / Der „Radioempfänger“: Ein sogenannter seismischer Streamer mit Hydrophonen (praktisch Unterwasser-Mikrofone) zum Aufzeichnen der niedrig-frequenten Schallwellen, die von den Luftkanonen, durch den Meeresboden und zurück zur Meeresoberfläche gewandert sind. (© M. Klischies)

Boom. Every 12 seconds. Boom. You can rather feel than hear the deep sound vibrating through the ship. Boom. – Seismic measurements try to ‘look’ through the seafloor, into the sediments and rocks. They use deep, very low frequency sound of around 6 Hertz, which is noticeable lower than common electric or acoustic bass drums. […]

From R/V Meteor towards the Sun

Fresh air! First results of the aerosol distribution on cruise M127. / Saubere Luft! Erste Ergebnisse der Aerosolverteilung auf der Fahrt M127 (Foto: Screenshot von

*a guest entry by Laura Raeke, Max-Planck-Institute for Meteorology, Hamburg* Above surface…   While the most scientists on board of the RV Meteor on cruise M127 are interested in seismic and geological processes under the sea(floor) surface, there are also measurements going on in the other direction: above surface, into the sun. The task is, […]

Planning, Planning, Planning

The RV Meteor, with a fully stuffed back deck, at sea. / Die FS Meteor mit einem voll beladenen Arbeitsdeck auf See. (© M. Klischies)

Day 20 without our luggage on board. It will wait for us in Ponta Delgada, our next port. Now, we (11 crew members and scientists) are living with what was on board and what we were able to shop in Bridgetown, Barbados. It is no surprise that the washing machine was the first thing we […]

To the Seafloor and Back

Our eyes and tool for the deep sea: Hybis. / Unsere Augen und Werkzeug in der Tiefsee: Hybis. (© AUV-Team)

“Bridge for lab. We reached the bottom.” Two clicks in the walky-talky: the confirmation from the bridge. In the lab, on boxes, tables, and even on the floor gather the scientists around the screen, on which fine lines slowly appear, and on which a blue-grey turns into a pale yellow. Dark spots become rocky boulders, […]

1151 nautical miles straight

Go Northeast! Good conditions for the Meteor to reach our target area. / Auf nach Nordosten! Gute Bedingungen für die Meteor auf ihrer Fahrt in unser Zielgebiet. (© Meike Klischies)

Heading of 50 degrees. Northeast. Speed of 10 to 11 knots. Calm, blue sea. Now and then, a bird flies by. Nothing has really changed for three days, and it will stay like this for another two days, until we reached our target area, the TAG hydrothermal field. To go there, a plane would need […]

Ahoi from Barbados

The morning after our arrival in Bridgetown, Barbados. / Der Morgen nach unserer Ankunft in Bridgetown, Barbados. (© M. Klischies)

  Ahoi from Barbados … the place, from where we start our five-week expedition with the German research vessel Meteor. The aim of our adventure is the exploration and investigation of active and inactive hot springs of the TAG hydrothermal field, which lies on the seafloor in the middle of the central Atlantic Ocean; more […]

Live from the seafloor

Screenshot from Live ROV-Video (via with hydrothermal vents

At the moment, on board research vessel R/V Falkor, colleges are diving with a remotely operated vehicle (ROV) to a hydrothermal vent site in the south western Pacific. A live stream from the seafloor is available here. What they are doing there and why, find out here.   —- Im Moment tauchen Kollegen vom Forschungsschiff […]

The Last Line

Our work station for the time on board: the TechLab on board R/V Kilo Moana. / Unsere „Schaltzentrale“ während unserer Zeit an Bord: Das Techniklabor. (Photo by Meike)

The ‘TechLab’, where all machines, sensors, and systems on board meet, has been our work station for nearly a month now. In three shifts, each of eight hours, we worked 24/7: watched the sonar systems, launched XBTs at least every six hours, and stored, processed, and gridded several tens (or even hundreds?) of gigabytes of […]

Wind, Waves and Water masses

Wave action of the port-side bow. (Photos by Meike)

or ‘How we map, part II’   Have you ever tried to focus your camera on a point at the horizon out of a car driving across bumpy streets? That is basically what the multibeam echosounder system on the Kilo Moana, has to deal with. In order to get a continuous and clear image of […]