Arctic Gakkel Vents (AGAVE) Expedition - Meteorological, Oceanographic and Ship Data Collected Onboard Icebreaker Oden during July 1 through August 9 2007

Principal investigator(s):

Abstract:

AGAVE was a US-financed project where scientists explored life in the hydrothermal vents from the core of the Earth, which has been found at the Gakkel Ridge, a mountain ridge below the Arctic Ocean. The expedition was an International Polar Year (IPY) collaboration between scientists from the USA, Sweden, Germany and Japan. The AGAVE expedition made a number of exciting discoveries on the Gakkel Ridge, and one of the most surprising was the fact that the axial valley at the 85°E segment is blanketed in pyroclastic deposits - the largest unconsolidated deposits ever found on the seafloor (picture 4). These deposits are caused by explosive volcanic eruptions, which many scientists had assumed were impossible in the deep ocean because of the great pressures at such depths. The AGAVE observations turn this idea upside down, and demonstrate that volcanic activity at the 85°E site has been accompanied by the catastrophic discharge of magmatic volatiles. These pyroclastic deposits are being analyzed to determine their age and composition in order to better understand this surprising result. The de

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ECDS 0207-001 agave.zip Arctic Gakkel Vents (AGAVE) Expedition - Meteorological, Oceanographic and Ship Data Collected Onboard Icebreaker Oden during July 1 through August 9 2007

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SND-ID:

DOI: doi.org/10.5879/ECDS/2016-07-07.6/1

Principal investigator(s):

Principal organisation:

Purpose:

The AGAVE expedition had two sets of complimentary objectives. The scientific objective was to study the geological, chemical, and biological characteristics of volcanic activity and hydrothermal venting on the Gakkel Ridge. The engineering objective was to develop new technologies for deep-sea research in ice-covered oceans.

Abstract:

AGAVE was a US-financed project where scientists explored life in the hydrothermal vents from the core of the Earth, which has been found at the Gakkel Ridge, a mountain ridge below the Arctic Ocean. The expedition was an International Polar Year (IPY) collaboration between scientists from the USA, Sweden, Germany and Japan. The AGAVE expedition made a number of exciting discoveries on the Gakkel Ridge, and one of the most surprising was the fact that the axial valley at the 85°E segment is blanketed in pyroclastic deposits - the largest unconsolidated deposits ever found on the seafloor (picture 4). These deposits are caused by explosive volcanic eruptions, which many scientists had assumed were impossible in the deep ocean because of the great pressures at such depths. The AGAVE observations turn this idea upside down, and demonstrate that volcanic activity at the 85°E site has been accompanied by the catastrophic discharge of magmatic volatiles. These pyroclastic deposits are being analyzed to determine their age and composition in order to better understand this surprising result. The de

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Time period(s) investigated:

2007-07-01 — 2007-08-10

Collection events:

2007-07-01 — 2007-08-09 (Field observation)

Geographic location:

Kind of data format:

Moving measurements

Publications

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If you have published anything based on this study, please send a notification with a reference to your publication(s) to snd@snd.gu.se.

Version 1.0:

Download data:

ECDS 0207-001 agave.zip Arctic Gakkel Vents (AGAVE) Expedition - Meteorological, Oceanographic and Ship Data Collected Onboard Icebreaker Oden during July 1 through August 9 2007

Citation:

Swedish Polar Research Secretariat (2017). Arctic Gakkel Vents (AGAVE) Expedition - Meteorological, Oceanographic and Ship Data Collected Onboard Icebreaker Oden during July 1 through August 9 2007. Swedish National Data Service. Version 1.0. https://doi.org/10.5879/ECDS/2016-07-07.6/1

Description:

This data set contains meteorological, oceanographic and ship data collected during the US-Swedish expedition Arctic Gakkel Vents (AGAVE), which was an international research cruise using the icebreaker Oden in the Arctic Ocean. Data includes: meteorological variables: Air temperature, Humidity, Wind direction/speed, Atmospheric pressure. Oceanographic variables: Sea water temperature, Conductivity, Salinity and Sound velocity. Ship data: Position, Speed, Course, Water depth. Further metadata on instrumentation and the individual variables can be found in the info file. Graphics and files describing the route are included in the package. Quality Information: Obviously erroneous data (e.g. negative air pressure) have been omitted. No other processing or quality check of the data has been undertaken. Users should be aware of this in further data handling and analysis.

Collection events:

2007-07-01 - 2007-08-09 (Field observation)

Collection methodology:

Physical measurements

Time period(s) investigated:

2007-07-01 — 2007-08-09

Variables:

15

Languages:

Data: English

License:

Creative Commons License