GLORIA — GEOMAR Library Ocean Research Information Access

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Online-Ressource

RV SONNE Fahrtbericht / Cruise report SO239 : EcoResponse assessing the ecology, connectivity and resilience of polymetallic nodule field systems; Balboa (Panama) – Manzanillo (Mexico), 11.03. -30.04.2015 (2015)

FS Sonne [Sonstige Person, Familie und Körperschaft]

Kiel : GEOMAR, Helmholtz-Zentrum für Ozeanforschung

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Schlagwort(e): Pazifischer Ozean ; Clipperton ; Erzlagerstätte ; Manganknollen ; Meeresboden ; Eisen-Mangan-Kruste ; Isla Clarión ; Meeresökosystem ; Meeresbergbau ; Meeresbiologie ; Tiefsee

Materialart: Online-Ressource

Seiten: 1 Online-Ressource (196 Seiten) , Illustrationen, Diagramme, Karten

Serie: GEOMAR Report N.S. 25

URL: http://dx.doi.org/10.3289/GEOMAR_REP_NS_25_2015

URL: https://oceanrep.geomar.de/30422/

URL: http://oceanrep.geomar.de/30422/1/GEOMAR_Report%20NS%2025.pdf

DOI: 10.3289/GEOMAR_REP_NS_25_2015

Sprache: Deutsch , Englisch

Anmerkung: Volltext: PDF , Zusammenfassung in deutscher und englischer Sprache

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2

Online-Ressource

RV POSEIDON Fahrtbericht / Cruise Report POS518: Baseline Study for the Environmental Monitoring of Subseafloor CO2 Storage Operations : Leg 1: Bremerhaven – Bremerhaven (Germany) 25.09.-11.10.2017, Leg 2: Bremerhaven – Kiel (Germany) 12.10.-28.10.2017 (2018)

Poseidon [Sonstige Person, Familie und Körperschaft]

Kiel : GEOMAR, Helmholtz-Zentrum für Ozeanforschung

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Materialart: Online-Ressource

Seiten: 1 Online-Ressource (84 Seiten)

Serie: GEOMAR Report N. Ser. 40

URL: http://oceanrep.geomar.de/41706/

Sprache: Englisch

Anmerkung: Zusammenfassung in deutscher und englischer Sprache

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3

Buch

The SUGAR Toolbox : a library of numerical algorithms and data for modelling of gas hydrate systems and marine environments (2013)

Kossel, Elke 1973- ; Bigalke, Nikolaus 1974- ; Pinero, Elena ; [weitere]

Kiel : GEOMAR, Helmholtz-Zentrum für Ozeanforschung

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Materialart: Buch

Seiten: II, 160 S. , graph. Darst.

Serie: GEOMAR Report N.S. 8

Sprache: Englisch , Deutsch

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4

Online-Ressource

FS MARIA S. MERIAN Fahrtbericht/Cruise Report MSM34/1 & 2 - SUGAR Site ; Varna – Varna, 06.12.13 – 16.01.14 (2014)

Maria S. Merian [Sonstige Person, Familie und Körperschaft]

Kiel : GEOMAR, Helmholtz-Zentrum für Ozeanforschung

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Materialart: Online-Ressource

Seiten: graph. Darst.

Ausgabe: Online-Ausg. Online-Ressource

Serie: GEOMAR Report N.S. 15

URL: http://oceanrep.geomar.de/24091/

URL: http://dx.doi.org/10.3289/GEOMAR_REP_NS_15_2014

Sprache: Englisch , Deutsch

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5

Online-Ressource

The SUGAR Toolbox : a library of numerical algorithms and data for modelling of gas hydrate systems and marine environments (2013)

Kossel, Elke 1973- ; Bigalke, Nikolaus 1974- ; Pinero, Elena ; [weitere]

Kiel : GEOMAR, Helmholtz-Zentrum für Ozeanforschung

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Materialart: Online-Ressource

Seiten: graph. Darst.

Ausgabe: Online-Ausg. Online-Ressource (PDF-Datei: 160 S., 3,3 MB)

Serie: GEOMAR Report N.S. 8

URL: http://oceanrep.geomar.de/21558/

URL: http://dx.doi.org/10.3289/GEOMAR_REP_NS_8_2013

Sprache: Englisch , Deutsch

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6

Unbekannt

The Character and Formation of Elongated Depressions on the Upper Bulgarian Slope (2018)

Xu, Cuiling ; Greinert, Jens ; Haeckel, Matthias ; [weitere]

Springer

In: Journal of Ocean University of China, 17 (3). pp. 555-562.

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Publikationsdatum: 2021-02-08

Beschreibung: Seafloor elongated depressions are indicators of gas seepage or slope instability. Here we report a sequence of slope-parallel elongated depressions that link to headwalls of sediment slides on upper slope. The depressions of about 250 m in width and several kilometers in length are areas of focused gas discharge indicated by bubble-release into the water column and methane enriched pore waters. Sparker seismic profiles running perpendicular and parallel to the coast, show gas migration pathways and trapped gas underneath these depressions with bright spots and seismic blanking. The data indicate that upward gas migration is the initial reason for fracturing sedimentary layers. In the top sediment where two young stages of landslides can be detected, the slope-parallel sediment weakening lengthens and deepens the surficial fractures, creating the elongated depressions in the seafloor supported by sediment erosion due to slope-parallel water currents.

Materialart: Article , PeerReviewed , info:eu-repo/semantics/article

Format: text

DOI: 10.1007/s11802-018-3460-7

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7

Unbekannt

Mind the seafloor (2018)

Boetius, Antje ; Haeckel, Matthias

AAAS (American Association for the Advancement of Science)

In: Science, 359 (6371). pp. 34-36.

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Publikationsdatum: 2021-02-08

Beschreibung: Research and regulations must be integrated to protect seafloor biota from future mining impacts Summary: As human use of rare metals has diversified and risen with global development, metal ore deposits from the deep ocean floor are increasingly seen as an attractive future resource. Japan recently completed the first successful test for zinc extraction from the deep seabed, and the number of seafloor exploration licenses filed at the International Seabed Authority (ISA) has tripled in the past 5 years. Seafloor-mining equipment is being tested, and industrial-scale production in national waters could start in a few years. We call for integrated scientific studies of global metal resources, the fluxes and fates of metal uses, and the ecological footprints of mining on land and in the sea, to critically assess the risks of deep-sea mining and the chances for alternative technologies. Given the increasing scientific evidence for long-lasting impacts of mining on the abyssal environment, precautionary regulations for commercial deep-sea mining are essential to protect marine ecosystems and their biodiversity.

Materialart: Article , PeerReviewed

Format: text

DOI: 10.1126/science.aap7301

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8

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Gas migration through Opouawe Bank at the Hikurangi margin offshore New Zealand (2016)

Koch, Stephanie ; Schröder, Henning ; Haeckel, Matthias ; [weitere]

Springer

In: Geo-Marine Letters, 36 (3). pp. 187-196.

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Publikationsdatum: 2019-09-23

Beschreibung: This study presents 2D seismic reflection data, seismic velocity analysis, as well as geochemical and isotopic porewater compositions from Opouawe Bank on New Zealand’s Hikurangi subduction margin, providing evidence for essentially pure methane gas seepage. The combination of geochemical information and seismic reflection images is an effective way to investigate the nature of gas migration beneath the seafloor, and to distinguish between water advection and gas ascent. The maximum source depth of the methane that migrates to the seep sites on Opouawe Bank is 1,500–2,100 m below seafloor, generated by low-temperature degradation of organic matter via microbial CO2 reduction. Seismic velocity analysis enabled identifying a zone of gas accumulation underneath the base of gas hydrate stability (BGHS) below the bank. Besides structurally controlled gas migration along conduits, gas migration also takes place along dipping strata across the BGHS. Gas migration on Opouawe Bank is influenced by anticlinal focusing and by several focusing levels within the gas hydrate stability zone.

Materialart: Article , PeerReviewed , info:eu-repo/semantics/article

Format: text

DOI: 10.1007/s00367-016-0441-y

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9

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Risk Assessment for Deep-Seabed Mining (2022)

van Doorn, Erik ; Laugesen, Jens ; Haeckel, Matthias ; [weitere]

Springer

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Publikationsdatum: 2023-10-06

Beschreibung: Uncertainties concerning deep-seabed mining relate to the expected impacts on the abyssal benthic and pelagic environment and its ecosystems but also include geopolitical, economic, societal and cultural uncertainty. The uncertain impacts from mining lead to anxiety and a low societal acceptance for the activity and are not the same for everybody at the same time. Hence, uncertainty is an important element of the risk involved in deep-seabed mining. This chapter describes the different risks involved, develops a methodology for risk assessment for the exploitation of marine mineral resources that takes into consideration the state of knowledge and evolving research on deep-sea ecosystems, and informs on possible environmental threshold values in relation to deep-seabed mining operations.

Materialart: Book chapter , NonPeerReviewed

Format: text

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10

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Effects of a deep-sea mining experiment on seafloor microbial communities and functions after 26 years (2020)

Vonnahme, T. R. ; Molari, M. ; Janssen, F. ; [weitere]

AAAS (American Association for the Advancement of Science)

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Publikationsdatum: 2023-02-08

Beschreibung: Future supplies of rare minerals for global industries with high-tech products may depend on deep-sea mining. However, environmental standards for seafloor integrity and recovery from environmental impacts are missing. We revisited the only midsize deep-sea disturbance and recolonization experiment carried out in 1989 in the Peru Basin nodule field to compare habitat integrity, remineralization rates, and carbon flow with undisturbed sites. Plough tracks were still visible, indicating sites where sediment was either removed or compacted. Locally, microbial activity was reduced up to fourfold in the affected areas. Microbial cell numbers were reduced by ~50% in fresh “tracks” and by 〈30% in the old tracks. Growth estimates suggest that microbially mediated biogeochemical functions need over 50 years to return to undisturbed levels. This study contributes to developing environmental standards for deep-sea mining while addressing limits to maintaining and recovering ecological integrity during large-scale nodule mining.

Materialart: Article , PeerReviewed , info:eu-repo/semantics/article

Format: text

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