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  • 1
    Online Resource
    Online Resource
    CAGE22-3 Cruise Report: EMAN7 cruise
    UiT The Arctic University of Norway ; 2022
    In:  CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series Vol. 10 ( 2022-11-18)
    Details
    In: CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series, UiT The Arctic University of Norway, Vol. 10 ( 2022-11-18)
    Abstract: The cruise mainly focused on two areas in the Hola Trough: at node 7 where methane seeps have been mapped, and further north (node 1) where are located cold coral reefs. The aim of the cruise was to characterize the seafloor and local biology, bubbles characteristics, the water column chemistry and methane dynamic. We also performed corals transplant to study adaptation and installed Piezometers and temperature probes for fluid flow calculation. The cruise may be known as: CAGE22_3
    Type of Medium: Online Resource
    ISSN: 2703-9625
    URL: Issue
    URL: Article
    DOI: 10.7557/cage.2022
    DOI: 10.7557/cage.6760
    Language: Unknown
    Publisher: UiT The Arctic University of Norway
    Publication Date: 2022
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  • 2
    Online Resource
    Online Resource
    CAGE20-7 Cruise Report: Sediment and water column analyses around flares at Norskebanken, Hinlopen and offshore Prins Karls Forland
    UiT The Arctic University of Norway ; 2023
    In:  CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series Vol. 8 ( 2023-01-23)
    Details
    In: CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series, UiT The Arctic University of Norway, Vol. 8 ( 2023-01-23)
    Abstract: During the cruise CAGE 20-7 (November 2nd to 16th 2020), we observed and investigated a large active methane seepage area south from the Yermak plateau (Northern Svalbard), in particular to characterize the water column and the sediment near known flares in Norskebanken (Geissler et al., 2016). Some flares were targeted for gas composition, DNA and bubble size distribution. The combination of the R/V Kronprins Haakon and the ROV ÆGIR 6000 from the Norwegian Marine Robotics Laboratory at the University of Bergen allowed this investigation to happen in this rough environment, while collecting invaluable data from the ROV. The cruise may be known as: CAGE20_7
    Type of Medium: Online Resource
    ISSN: 2703-9625
    URL: Article
    DOI: 10.7557/cage.6916
    Language: Unknown
    Publisher: UiT The Arctic University of Norway
    Publication Date: 2023
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  • 3
    Online Resource
    Online Resource
    CAGE 20-1 Cruise Report: K-lander recovery and water column survey offshore Svalbard and in the Barents Sea
    UiT The Arctic University of Norway ; 2023
    In:  CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series Vol. 8 ( 2023-01-23)
    Details
    In: CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series, UiT The Arctic University of Norway, Vol. 8 ( 2023-01-23)
    Abstract: The cruise was conducted from June 22nd to July 1th 2020 as part of the Centre of Excellence for Arctic Gas Hydrate, Environment and Climate (CAGE) at UiT – The Arctic University of Norway. The main objective of the research cruise was to recover the K-lander that was deployed offshore Prins Karls Forland on an extensive methane seepage area. The sub-objective was to performed single and multibeam surveys around the lander in order to locate the origin of the signal seen in the collected data, and map the seepages to compare with our horizontally-looking multibeam mounted on the lander. In addition, we collected water from Niskin bottles during CTD casts to measure methane concentration in the water column along and across the lander. Other areas of interest were the “MASOX” site, and other sites where methane seepages are suspected The cruise may be known as: CAGE20_1
    Type of Medium: Online Resource
    ISSN: 2703-9625
    URL: Article
    DOI: 10.7557/cage.6912
    Language: Unknown
    Publisher: UiT The Arctic University of Norway
    Publication Date: 2023
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  • 4
    Online Resource
    Online Resource
    CAGE18-2 Cruise Report: LoVe site – exploration around node 7
    UiT The Arctic University of Norway ; 2022
    In:  CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series Vol. 6 ( 2022-11-18)
    Details
    In: CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series, UiT The Arctic University of Norway, Vol. 6 ( 2022-11-18)
    Abstract: The cruise was conducted from May 20th to 27th 2018 as part of the Centre of Excellence for Arctic Gas Hydrate, Environment and Climate (CAGE) at UiT – The Arctic University of Norway. The main goal of the cruise was to explore the area around Node 7 as part of the LoVe (Lofoten-Vesterålen) observatory. The first phase of the LoVe project was founded by Statoil in was first launched in 2013 to observe a cold coral reef. This area is known to be an oceanographic hotspot because the shelf is very narrow and northern drift of warm Atlantic water is concentrated and very dynamic in this area. It is also a biological hotspot because the large oceanic fish stocks are passing through or spawn in the area. It is finally an economic hotspot because the area is expected to hold large oil and gas resources but exploitation of these resources is controversial because of the importance for fish and fishermen in this region. The observatory has 12 sensors on the platform today including a camera looking at the coral reef and echosounders to study the biology. The second phase of LoVe was granted by the Research Council of Norway in 2015 through the Infrastructure programme, with a network of nodes crossing the main oceanographic and biological processes. The various nodes of the planned transect have specific objectives, and in particular, node 7 is located on top of methane seepages which CAGE is in charge. The present cruise aimed at performing echosounder and multibeam surveys as well as performing water samples and CTD casts around node 7 and known seepage area. The addressed scientific topics include quantification of methane concentration in the water column, temperature and salinity (via CTD casts), echosounder and multibeam signals and current (amplitude and direction) The cruise may be known as: CAGE18_2
    Type of Medium: Online Resource
    ISSN: 2703-9625
    URL: Article
    DOI: 10.7557/cage.6770
    Language: Unknown
    Publisher: UiT The Arctic University of Norway
    Publication Date: 2022
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  • 5
    Online Resource
    Online Resource
    CAGE16-7 Cruise Report: Deployment of observatories and water column survey in the Barents Sea and offshore Svalbard
    UiT The Arctic University of Norway ; 2023
    In:  CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series Vol. 4 ( 2023-01-24)
    Details
    In: CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series, UiT The Arctic University of Norway, Vol. 4 ( 2023-01-24)
    Abstract: The cruise was conducted from October 16th to 25th 2016 as part of the Centre of Excellence for Arctic Gas Hydrate, Environment and Climate (CAGE) at UiT – The Arctic University of Norway. The main goal of the cruise was to deploy two observatories in the pingo-crater area (“Yin Yang”) in the Barents Sea, and offshore Svalbard at the same location where OS2 was deployed in June 2015 and recovered in May 2016. The exact targeted location was determined according to multibeam analysis in order to deploy in the vicinity of bubble streams. The previously K-Landers called OS1 (black) and OS2 (grey) are now called K-Lander 1 and K-Lander 2. They contain a CH4 sensor, a CO2 sensor, a CTD, a pH meter, and a hydrophone. K-Lander 1 contains in addition a DVS (Doppler volume sampler) as the broken ADCP did not arrive on time for the deployment. K-Lander 2 contains in addition an ADCP, a transmissometer (for turbidity measurement) and an M3 (Multibeam echosounder). The present cruise also aimed at investigating an area of extensive flares western Svalbard, particularly the shallow shelf and shelf edge. The addressed scientific topics include quantification of methane concentration in the water column, temperature and salinity (via CTD casts), echosounder and multibeam signals and current (amplitude and direction) The cruise may be known as: CAGE16_7
    Type of Medium: Online Resource
    ISSN: 2703-9625
    URL: Article
    DOI: 10.7557/cage.6930
    Language: Unknown
    Publisher: UiT The Arctic University of Norway
    Publication Date: 2023
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  • 6
    Online Resource
    Online Resource
    CAGE18-5 Cruise report : Remotely-operated vehicle (ROV) investigations of active gas seepage sites in the Barents Sea
    UiT The Arctic University of Norway ; 2022
    In:  CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series Vol. 6 ( 2022-12-15)
    Details
    In: CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series, UiT The Arctic University of Norway, Vol. 6 ( 2022-12-15)
    Abstract: Cruise CAGE18-5 was the first research expedition under the helm of UiT The Arctic University of Norway in Tromsø with the new ice-going research vessel R/V Kronprins Håkon. This new vessel provides new opportunities to collect cross-disciplinary data for addressing the objectives of the Norwegian Centre of Excellence for Arctic Gas Hydrate, Environment and Climate, CAGE. CAGE investigates Arctic gas hydrate and methane seepage systems in order to better understand the effects they may have on our oceans, ecosystems and global climate. The new research vessel and its facilities allows CAGE access to a state-of-art remotely-operated vehicle, the ROV Ægir 6000, opening a new domain for experimental work and acquisition of sample material from the seafloor. The overall goal of cruise CAGE18-5 therefore was to utilize the ROV in order to provide guided video imagery and to study active gas seepage systems at the gas-hydrate pingo (GHP) site located in the outer Storfjord Trough, and at Storbanken in the northeastern part of the Barents Sea. The cruise may be known as: CAGE18_5
    Type of Medium: Online Resource
    ISSN: 2703-9625
    URL: Article
    DOI: 10.7557/cage.6853
    Language: Unknown
    Publisher: UiT The Arctic University of Norway
    Publication Date: 2022
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  • 7
    Online Resource
    Online Resource
    CAGE16-4 Cruise Report: Recovery of observatories and water column survey offshore Svalbard
    UiT The Arctic University of Norway ; 2023
    In:  CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series Vol. 4 ( 2023-01-24)
    Details
    In: CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series, UiT The Arctic University of Norway, Vol. 4 ( 2023-01-24)
    Abstract: The cruise occurred from May 1st to May 9th 2016 and was part of the Centre of Excellence for Arctic Gas Hydrate, Environment and Climate (CAGE) at UiT – The Arctic of Norway. The main goal of the cruise was to recover two observatories that were deployed on June 30th and July 2nd 2015 during CAGE 15-3 (chief scientist Anna Silyakova). The sites were selected according to pictures taken during CAGE 15-2 cruise (chief scientist Giuliana Panieri) illustrating bacterial mats on the sea floor. The exact locations   were decided just prior to deployment according to flare locations. The present cruise also aimed at investigating an area of extensive flares western Svalbard, particularly the shallow shelf and shelf edge. The addressed scientific topics include quantification of methane concentration in the water column, dissolved inorganic carbon, pH, microbial activity and identification, nutrients, DMSP, CDOM and current amplitude and direction. The cruise may be known as: CAGE16_4
    Type of Medium: Online Resource
    ISSN: 2703-9625
    URL: Article
    DOI: 10.7557/cage.6927
    Language: Unknown
    Publisher: UiT The Arctic University of Norway
    Publication Date: 2023
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  • 8
    Online Resource
    Online Resource
    CAGE17-4 Cruise Report: Recovery of observatory and water column survey offshore Svalbard
    UiT The Arctic University of Norway ; 2023
    In:  CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series Vol. 5 ( 2023-02-06)
    Details
    In: CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series, UiT The Arctic University of Norway, Vol. 5 ( 2023-02-06)
    Abstract: The cruise was conducted from August 3rd to 5th 2017 as part of the Centre of Excellence for Arctic Gas Hydrate, Environment and Climate (CAGE) at UiT –The Arctic University of Norway. The main goal of the cruise was to recover the observatory K-Lander 2 deployed in October 2016 offshore Svalbard, at the same location where OS2 was deployed in June 2015 and recovered in May 2016. The present cruise also aimed at continuing the water samples and CTD survey on the shallow shelf and the shelf edge presenting extensive flares western Svalbard. The addressed scientific topics include quantification of methane concentration in the water column, temperature and salinity (via CTD casts), echosounder and multibeam signals and current (amplitude and direction). The cruise may be known as: CAGE17_4
    Type of Medium: Online Resource
    ISSN: 2703-9625
    URL: Article
    DOI: 10.7557/cage.6953
    Language: Unknown
    Publisher: UiT The Arctic University of Norway
    Publication Date: 2023
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  • 9
    Online Resource
    Online Resource
    datasheet1.docx
    Frontiers Media SA ; 2020
    In:  Frontiers in Earth Science Vol. 8 ( 2020-12-7)
    Details
    In: Frontiers in Earth Science, Frontiers Media SA, Vol. 8 ( 2020-12-7)
    Abstract: Dissociating gas hydrates, submerged permafrost, and gas bearing sediments release methane to the water column from a multitude of seeps in the Arctic Ocean. The seeping methane dissolves and supports the growth of aerobic methane oxidizing bacteria (MOB), but the effect of seepage and seep related biogeochemical processes on water column dissolved organic matter (DOM) dynamics is not well constrained. We compared dissolved methane, nutrients, chlorophyll, and particulate matter concentrations and methane oxidation (MOx) rates from previously characterized seep and non-seep areas at the continental margin of Svalbard and the Barents Sea in May and June 2017. DOM molecular composition was determined by Electrospray Ionization Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR MS). We found that the chemical diversity of DOM was 3 to 5% higher and constituted more protein- and lipid-like composition near methane seeps when compared to non-seep areas. Distributions of nutrients, chlorophyll, and particulate matter however, were essentially governed by the water column hydrography and primary production. We surmise that the organic intermediates directly derived from seepage or indirectly from seep-related biogeochemical processes, e.g., MOx, modifies the composition of DOM leading to distinct DOM molecular-level signatures in the water column at cold seeps.
    Type of Medium: Online Resource
    ISSN: 2296-6463
    URL: Article
    URL: Article
    DOI: 10.3389/feart.2020.552731
    DOI: 10.3389/feart.2020.552731.s001
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2020
    detail.hit.zdb_id: 2741235-0
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  • 10
    Online Resource
    Online Resource
    Hot Vents Beneath an Icy Ocean: The Aurora Vent Field, Gakkel Ridge, Revealed
    The Oceanography Society ; 2023
    In:  Oceanography Vol. 36, No. 1 ( 2023-03-01)
    Details
    In: Oceanography, The Oceanography Society, Vol. 36, No. 1 ( 2023-03-01)
    Abstract: Evidence of hydrothermal venting on the ultra-slow spreading Gakkel Ridge in the Central Arctic Ocean has been available since 2001, with first visual evidence of black smokers on the Aurora Vent Field obtained in 2014. But it was not until 2021 that the first ever remotely operated vehicle (ROV) dives to hydrothermal vents under permanent ice cover in the Arctic were conducted, enabling the collection of vent fluids, rocks, microbes, and fauna. In this paper, we present the methods employed for deep-sea ROV operations under drifting ice. We also provide the first description of the Aurora Vent Field, which includes three actively venting black smokers and diffuse flow on the Aurora mound at ~3,888 m depth on the southern part of the Gakkel Ridge (82.5°N). The biological communities are dominated by a new species of cocculinid limpet, two small gastropods, and a melitid amphipod. The ongoing analyses of Aurora Vent Field samples will contribute to positioning the Gakkel Ridge hydrothermal vents in the global biogeographic puzzle of hydrothermal vents.
    Type of Medium: Online Resource
    ISSN: 1042-8275
    URL: Journal
    URL: Article
    DOI: 10.5670/oceanog
    DOI: 10.5670/oceanog.2023.103
    Language: Unknown
    Publisher: The Oceanography Society
    Publication Date: 2023
    detail.hit.zdb_id: 1167549-4
    detail.hit.zdb_id: 2268693-9
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