Article
Geosciences, Multidisciplinary
B. Bukhanov, E. Chuvilin, M. Zhmaev, N. Shakhova, E. Spivak, O. Dudarev, A. Osadchiev, M. Spasennykh, I. Semiletov
Summary: Understanding the features of sediment temperature and physical properties in the shelf and continental slope areas of the Russian Arctic seas is crucial for assessing the current condition of subsea permafrost and gas hydrates stability zone.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Oceanography
Hongjie Liang, Jie Su
Summary: The onset of ice/snow melt is critical for the ice-albedo positive feedback in the Arctic region. The timing of melt onset has shown a significant shift between the Laptev Sea and the East Siberian Sea from 1979 to 2018, with a phenomenon referred to as the Melt Onset Seesaw becoming more pronounced since 1999. The melt onset in each of these regions is influenced by a combination of local variables and large-scale atmospheric circulation patterns.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Environmental Sciences
Anastasia N. Drozdova, Ivan N. Krylov, Andrey A. Nedospasov, Elena G. Arashkevich, Timur A. Labutin
Summary: The East Siberian Sea is an area with high biogeochemical activity, characterized by unique dissolved organic carbon behavior and spectral distribution. Compared to the Laptev Sea, the shelf waters of the East Siberian Sea contain higher levels of protein-like and marine humic-like fluorescent substances.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Christina Bienhold, Vibe Schourup-Kristensen, Thomas Krumpen, Eva-Maria Noethig, Frank Wenzhoefer, Meri Korhonen, Myriel Vredenborg, Laura Hehemann, Antje Boetius
Summary: The central Arctic Ocean is undergoing rapid changes due to amplified warming and sea ice retreat. Limited observations in this remote area make it challenging to document and understand the impacts on key ecosystem processes. However, a study at the Laptev Sea continental slope reveals that sea ice breakup occurred earlier and the ice-free period extended by over 30 days in 2012 compared to 1993. Primary production in the study area also significantly increased in 2012. The flux of organic carbon to the seafloor slightly increased, but not as much as primary production, possibly due to a more developed retention system. Benthic surveys showed a substantial increase in the availability of phytodetritus at the seafloor along the entire transect.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Microbiology
Soohyun Kim, Kwanwoo Kim, Naeun Jo, Hyo-Keun Jang, So-Hyun Ahn, Janghan Lee, Howon Lee, Sanghoon Park, Dabin Lee, Dean A. Stockwell, Terry E. Whitledge, Sang-Heon Lee
Summary: The understanding of primary production of phytoplankton in the Kara Sea, Laptev Sea, and East Siberian Sea is limited. In order to address this knowledge gap, three NABOS expeditions were conducted, measuring in situ primary production rates and examining their controlling factors. The study found significant spatial and regional differences in primary production rates, with the East Siberian Sea having a lower rate compared to the Kara Sea and Laptev Sea, likely due to regional differences in freshwater content.
Article
Geosciences, Multidisciplinary
Alexander B. Kuzmichev, Maria K. Danukalova
Summary: Several fold belts, including the Verkhoyansk-Chukotka fold belt, shape the structure of the Laptev Sea region. The Verkhoyansk fold belt occupies most of the Laptev Sea shelf and is folded in an orocline shape. The region's geological history can be traced through Permian rocks and shows the collision of Siberia with Baltica in different periods.
EARTH-SCIENCE REVIEWS
(2023)
Article
Environmental Sciences
Gunther Heinemann, Clemens Druee, Pascal Schwarz, Alexander Makshtas
Summary: A one-year field campaign at the Tiksi observatory in the Laptev Sea area used SODAR/RASS measurements to investigate the atmospheric boundary layer with a focus on low-level jets during winter, revealing the presence and characteristics of LLJs as well as their main driving mechanism and the influence of local topography.
Article
Environmental Sciences
Alexander Osadchiev, Dmitry Frey, Eduard Spivak, Sergey Shchuka, Natalia Tilinina, Igor Semiletov
Summary: This study focuses on the freshened surface layer (FSL) in the Laptev and East-Siberian seas, showing that the morphology of deltaic rivers and estuaries significantly impact the distribution of freshwater and the extent of the FSL. Wind conditions play a crucial role in determining the spreading and inter-annual variability of the FSL.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Dong-Gyun Han, Jongmin Joo, Wuju Son, Kyoung Ho Cho, Jee Woong Choi, Eun Jin Yang, Jeong-Hoon Kim, Sung-Ho Kang, Hyoung Sul La
Summary: The underwater acoustic environment in the Arctic Ocean is rapidly changing due to Arctic warming. Results from passive acoustic monitoring in the East Siberian Sea's marginal ice zone show a strong negative correlation between ambient sound levels and sea ice concentration (SIC). The sound level in September was significantly higher than other months, indicating a potential increase in ambient sound level in the Arctic Ocean as sea ice melting accelerates.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Evgeniy Yakushev, Anna Gebruk, Alexander Osadchiev, Svetlana Pakhomova, Amy Lusher, Anfisa Berezina, Bert van Bavel, Elena Vorozheikina, Denis Chernykh, Glafira Kolbasova, Ilia Razgon, Igor Semiletov
Summary: Plastic pollution is recognized as a global threat to marine ecosystems, habitats, and wildlife, with remote locations such as the Arctic Ocean being impacted. This study analyzes microplastic distribution in the Eurasian Arctic through water samples, identifying two major sources of pollution: Atlantic surface water and discharge plumes of the Great Siberian Rivers.
COMMUNICATIONS EARTH & ENVIRONMENT
(2021)
Article
Environmental Sciences
Wuju Son, Jee-Hoon Kim, Eun Jin Yang, Hyoung Sul La
Summary: The diel vertical migration (DVM) of zooplankton in the Arctic Ocean varies among key copepod species. Calanus glacialis and Calanus hyperboreus show non-DVM behaviors, while Metridia longa exhibits a typical DVM pattern. These findings provide important insights into the vertical distribution variations of copepod species in the rapidly changing Arctic marine environment.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Ecology
Jens A. Hoelemann, Bennet Juhls, Dorothea Bauch, Markus Janout, Boris P. Koch, Birgit Heim
Summary: Permafrost degradation in major Siberian river catchments, combined with higher precipitation in a warming climate, could increase the flux of terrestrially derived dissolved organic matter into the Arctic Ocean. A study reveals that conservative mixing of high-tDOM river water and sea-ice meltwater with low-tDOM seawater is the major factor controlling the surface distribution of tDOM in the Laptev Sea and East Siberian Sea.
Article
Oceanography
Li Li, Xiaojing Wang, Yijun Ren, Huaqiang Su, Limin Hu, Gang Yang, Zhongqiao Li, Aleksandr A. Bosin, Anatolii S. Astakhov, Jianfang Chen, Yanguang Liu, Xuefa Shi
Summary: This study reveals the key role of shelf-basin exchange processes in regulating biogeochemical recycling of trace metals in the Arctic Ocean, with metal transport mainly scavenged by Mn oxides from the water column. As climate change progresses, this transport and enrichment mechanism may intensify over time.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Environmental Sciences
Elena Golubeva, Marina Kraineva, Gennady Platov, Dina Iakshina, Marina Tarkhanova
Summary: The study found that the temperature of the Siberian Arctic seas significantly increased during the second decade of the 21st century, with the increase in sea surface temperature being considered as marine heatwaves. Through numerical modeling and analysis, it was discovered that the temperature rise in the Arctic seas is closely related to the disappearance of ice cover.
Article
Environmental Sciences
F. Matsubara, B. Wild, J. Martens, A. Andersson, R. Wennstrom, L. Broder, O. Dudarev, I Semiletov, O. Gustafsson
Summary: Global warming leads to the thawing of permafrost, resulting in the increased release of terrigenous organic matter to the Arctic Ocean. The degradation of this organic matter contributes to greenhouse gas emissions and ocean acidification, but the vulnerability of different components is not well known. This study investigates the degradation dynamics of terrigenous organic matter in the East Siberian Arctic Shelf, revealing differences in degradation between different chemical compounds.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Review
Geosciences, Multidisciplinary
L. Gernigon, D. Franke, L. Geoffroy, C. Schiffer, G. R. Foulger, M. Stoker
EARTH-SCIENCE REVIEWS
(2020)
Review
Geosciences, Multidisciplinary
Alexander L. Peace, J. J. J. Phethean, D. Franke, G. R. Foulger, C. Schiffer, J. K. Welford, G. McHone, S. Rocchi, M. Schnabel, A. G. Dore
EARTH-SCIENCE REVIEWS
(2020)
Review
Geosciences, Multidisciplinary
Christian Schiffer, Anthony G. Dore, Gillian R. Foulger, Dieter Franke, Laurent Geoffroy, Laurent Gernigon, Bob Holdsworth, Nick Kusznir, Erik Lundin, Ken McCaffrey, Alexander L. Peace, Kenni D. Petersen, Thomas B. Phillips, Randell Stephenson, Martyn S. Stoker, J. Kim Welford
EARTH-SCIENCE REVIEWS
(2020)
Article
Geochemistry & Geophysics
Maren Vormann, Dieter Franke, Wilfried Jokat
Article
Geosciences, Multidisciplinary
Emma C. Smith, Tore Hattermann, Gerhard Kuhn, Christoph Gaedicke, Sophie Berger, Reinhard Drews, Todd A. Ehlers, Dieter Franke, Rapahel Gromig, Coen Hofstede, Astrid Lambrecht, Andreas Laeufer, Christoph Mayer, Ralf Tiedemann, Frank Wilhelms, Olaf Eisen
GEOPHYSICAL RESEARCH LETTERS
(2020)
Article
Geosciences, Multidisciplinary
E. Wiles, M. Watkeys, W. Jokat
JOURNAL OF AFRICAN EARTH SCIENCES
(2020)
Article
Geochemistry & Geophysics
Tabea Altenbernd, Wilfried Jokat, Wolfram Geissler
Biographical-Item
Geosciences, Multidisciplinary
Ruediger Lutz, Dieter Franke
ZEITSCHRIFT DER DEUTSCHEN GESELLSCHAFT FUR GEOWISSENSCHAFTEN
(2020)
Review
Geosciences, Multidisciplinary
Youssef Biari, Frauke Klingelhoefer, Dieter Franke, Thomas Funck, Lies Loncke, Jean-Claude Sibuet, Christophe Basile, James A. Austin, Caesar Augusto Rigoti, Mohamed Sahabi, Massinissa Benabdellouahed, Walter R. Roest
Summary: Deep seismic data and plate kinematic reconstructions were used to analyze the mechanisms of rifting at the Atlantic margins, focusing on the development of magma-rich and magma-poor margins and the role of inheritance in break-up processes. The study also investigated the formation and origin of transform marginal plateaus, characterized by volcanic phases, along the border of two ocean basins of different ages. Results showed variations in crustal thickness, oceanic plate thickness, and the influence of volcanism along the Atlantic margins.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Mohamed A. Haji Hassan, Peter Klitzke, Dieter Franke
Article
Geosciences, Multidisciplinary
Rudiger Lutz, Peter Klitzke, Philipp Weniger, Martin Blumenberg, Dieter Franke, Lutz Reinhardt, Axel Ehrhardt, Kai Berglar
Summary: The Olga Basin, located in the northern Barents Sea, shows signs of active petroleum systems with gas seepage, but the impact of erosion on petroleum generation remains debated.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Multidisciplinary Sciences
Stefan Ladage, Martin Blumenberg, Dieter Franke, Andreas Bahr, Ruediger Lutz, Sandro Schmidt
Summary: Methane emissions along the natural gas supply chain play a critical role in the climate benefits of switching from coal to natural gas in the power sector. For Germany, with methane leakage rates below specific break-even levels, transitioning to natural gas can significantly reduce CO2-equivalent GHG emissions.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Daniel Sauter, Gianreto Manatschal, Nick Kusznir, Charles Masquelet, Philippe Werner, Marc Ulrich, Paul Bellingham, Dieter Franke, Julia Autin
Summary: The source of massive magma production at volcanic rifted margins remains disputed. Accurate estimation of extruded and intruded melt products within rifted continental crust is still lacking using geophysical methods. This study investigates the magma budget along the South Atlantic margins, revealing that most of the southernmost Atlantic Ocean opened without anomalously hot mantle and high magma supply. Alternative explanations should be favored to explain the thick magmatic layer.
SCIENTIFIC REPORTS
(2023)
Article
Geosciences, Multidisciplinary
Charles Masquelet, Sylvie Leroy, Matthias Delescluse, Nicolas Chamot-Rooke, Isabelle Thinon, Anne Lemoine, Dieter Franke, Louise Watremez, Philippe Werner, Fabien Paquet, Carole Berthod, Victor Cabiativa Pico, Daniel Sauter
Summary: A multichannel seismic reflection profile obtained from the SISMAORE cruise in 2021 presents the first detailed image of the submarine volcanic edifice, Fani Maore, which formed 50 km east of Mayotte Island in 2018-2019. The volcanic edifice sits on a sedimentary layer approximately 140 m thick, below which lies a significant volcanic layer extending over 120 km along the profile. This volcanic layer is composed of distinct seismic facies, indicating successive volcanic phases and suggesting the main construction phase of Mayotte Island. A sedimentary unit of about 2.2-2.5 km thickness exists between the volcanic layer and the top of the crust.
COMPTES RENDUS GEOSCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Isabelle Thinon, Anne Lemoine, Sylvie Leroy, Fabien Paquet, Carole Berthod, Sebastien Zaragosi, Vincent Famin, Nathalie Feuillet, Pierre Boymond, Charles Masquelet, Nicolas Mercury, Anais Rusquet, Carla Scalabrin, Jerome Van der Woerd, Julien Bernard, Julie Bignon, Valerie Clouard, Cecile Doubre, Eric Jacques, Stephan J. Jorry, Frederique Rolandone, Nicolas Chamot-Rooke, Matthias Delescluse, Dieter Franke, Louise Watremez, Patrick Bachelery, Laurent Michon, Daniel Sauter, Stephane Bujan, Albane Canva, Emilie Dassie, Vincent Roche, Said Ali, Abdoul Hamid Sitti Allaouia, Christine Deplus, Setareh Rad, Ludivine Sadeski
Summary: Geophysical and geological data from the North Mozambique Channel reveal the presence of a recent volcanic and tectonic corridor within and north of the Comoros Archipelago. These features indicate a current regional dextral transtensional context and highlight the incipient Somalia-Lwandle dextral plate boundary between the East-African Rift System and Madagascar.
COMPTES RENDUS GEOSCIENCE
(2022)