Article
Oceanography
Eiji Watanabe, Jonaotaro Onodera, Motoyo Itoh, Kohei Mizobata
Summary: The study investigated the processes of seafloor sediment transport from the Chukchi shelf to the western Arctic basin. It found that the Barrow Canyon throughflow, Chukchi Slope Current, and mesoscale eddies played important roles in the redistribution of lithogenic material. The study also revealed that the lateral transport of sediment from the Chukchi shelf bottom significantly influenced the sinking flux of particulate organic carbon in the western Arctic basin, indicating the strong influence of shelf-basin exchange on the marine biogeochemical cycle.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Environmental Sciences
Yanpei Zhuang, Yangjie Li, Ling Chen, Haiyan Jin, Di Qi, Jianfang Chen
Summary: The spatial variability of ammonium concentrations along repeat transects on the Chukchi shelf from 2012 to 2018 was studied. Two distinct near-bottom high ammonium pools (>1 μmol/kg) were identified at 67.5 degrees N and 72.5 degrees N in all years. The accumulation of ammonium in these regions is primarily influenced by a combination of biogeochemical processes (such as dynamic bacterial remineralization of organic matter) and physical controls (such as a strong density-contrast barrier limiting upward mixing of ammonium). The expansion of the ammonium pool on the shelf may have potential impacts on the structure and productivity of the ecosystem on the Chukchi shelf.
MARINE ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Wangwang Ye, Yuhong Li, Jianwen Wen, Jiexia Zhang, Natalia Shakhova, Jian Liu, Man Wu, Igor Semiletov, Liyang Zhan
Summary: Increasing temperatures in the Arctic Ocean are causing changes in methane cycles, with methane being stored and transported from the Chukchi Sea to the central Arctic. The concentration of methane is increasing in the Upper Halocline, and its distribution is expanding due to intensified Pacific water inflow. Methane is also found in the Polar Mixed Layer and below-ice seawater in the basins, suggesting the influence of sea ice cycles and sediment-origin methane. The Arctic Ocean currently has minor atmospheric methane emissions, but the increasing methane excess and decreasing sea ice cover may lead to future emissions.
GLOBAL BIOGEOCHEMICAL CYCLES
(2023)
Article
Environmental Sciences
Anastasia Tarasenko, David Doxaran, Bernard Gentili
Summary: This work examines the changes in suspended particulate matter (SPM) concentrations in the Beaufort Sea over the past 20 years, which are directly influenced by the Mackenzie River discharge. The study finds a significant correlation between river discharge and SPM concentration in the coastal waters, with both showing a slight but significant decrease from 2003 to 2018-2019, followed by an increase in recent years. This change is attributed to changing winter precipitation, groundwater distribution, sediment accumulation in thawing permafrost layers, and rapid drainage of thermokarst lakes.
MARINE POLLUTION BULLETIN
(2023)
Article
Geochemistry & Geophysics
Ziming Fang, Weifeng Yang, Aron Stubbins, Min Chen, Junjie Li, Renming Jia, Qi Li, Jing Zhu, Bo Wang
Summary: In the Arctic region, the fate and removal process of dissolved black carbon released from river water into the ocean remains unclear. Research findings show that river discharge dominates the spatial distribution of dissolved black carbon in ice-free regions, while sea-ice meltwater dilutes dissolved organic carbon. The removal of riverine dissolved black carbon mainly occurs in shelf regions, playing a crucial role in modulating the delivery of black carbon to the open Arctic Ocean.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Geosciences, Multidisciplinary
Di Qi, Yingxu Wu, Liqi Chen, Wei-Jun Cai, Zhangxian Ouyang, Yixing Zhang, Leif G. Anderson, Richard A. Feely, Yanpei Zhuang, Hongmei Lin, Ruibo Lei, Haibo Bi
Summary: This study presents a 17-year observational data set in the Chukchi Sea, showing that pH and aragonite saturation state have declined at rates 2-3 times faster than those solely due to increasing atmospheric CO2. The rapid acidification can be attributed to increased dissolved inorganic carbon from ice melt-induced CO2 invasion and subsurface remineralization induced by nutrient-rich Pacific water inflow.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Marine & Freshwater Biology
Jihee Kim, Jong-Kuk Moon, Eun Jin Yang, Eunsuk Kim, Seunghee Han
Summary: This study identified seawater as the major source of total mercury (THg) in sea ice and in situ methylation as the potential source of methylmercury (MeHg). The melt flux of MeHg in the Arctic Ocean was found to be insignificant compared to other external sources. However, the ongoing decline of sea ice extent is likely to enhance MeHg production in late spring and summer.
ESTUARINE COASTAL AND SHELF SCIENCE
(2023)
Article
Oceanography
Miguel A. Goni, Lauren W. Juranek, Rachel E. Sipler, Kylie A. Welch
Summary: Two oceanographic cruises in 2016 and 2017 investigated the distribution of particulate organic matter across the northeast Chukchi Shelf. The research found significant variations in POM concentrations at different depths and during different seasons, with surface waters showing low organic carbon levels and middepth waters exhibiting increased productivity in response to upwelling or downwelling events.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Environmental Sciences
Qianqian Li, Yaxin Liu, Lei Xing, Xiao Han, Yuzhao Lin, Jin Zhang, Hongmao Zhang
Summary: This study investigates the characteristics of ambient noise in the Chukchi Sea area under different frequency bands and environmental settings. By comparing the results with global noise models, the study provides insights into the distribution patterns and sources of ambient noise in this region.
Article
Environmental Sciences
Youngju Lee, Kyoung-Ho Cho, Jinyoung Jung, Jong Kuk Moon, Eun Jin Yang, Sung-Ho Kang
Summary: The northern Chukchi and East Siberian Seas (NCESS) in the Arctic Ocean are vulnerable to climate change, and the study investigates the impact of local physical forcing on phytoplankton biomass and communities in this area. The research shows that despite regional differences, the inter-annual variation in phytoplankton biomass and communities is similar across the entire NCESS, indicating the importance of environmental controllers.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Alex Crawford, Julienne Stroeve, Abigail Smith, Alexandra Jahn
Summary: The length of open-water period in the Arctic region is projected to increase significantly with global warming, which may have been underestimated in the latest climate model simulations.
COMMUNICATIONS EARTH & ENVIRONMENT
(2021)
Article
Environmental Sciences
Melishia I. Santiago, Karen E. Frey
Summary: The study found that the QAA a443 and GSM-A a443 algorithms provide the most accurate representation of in-situ CDOM conditions, with geographic variables showing no significant impact on algorithm accuracy. Satellite observations of CDOM in the Pacific Arctic region should be used cautiously for representing in-situ conditions.
Article
Acoustics
Xuejing Mo, Hongtao Wen, Yanming Yang, Hongtao Zhou, Hailin Ruan
Summary: This study analyzes the relationship between the statistical characteristics of under-ice noise and ice transient events in the Arctic Chukchi Plateau. The occurrence of ice transients enhances the non-Gaussian statistics of under-ice noise.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Article
Environmental Sciences
Irina Zhulay, Bodil A. Bluhm, Paul E. Renaud, Renate Degen, Katrin Iken
Summary: Assessment of Arctic deep-sea ecosystem functioning using Biological Trait Analysis revealed differences in functional composition of epifauna between depth strata and the influence of environmental factors, highlighting the vulnerability of mid-depth stations to disturbance. Food input positively correlated with certain trait modalities, while areas with drop stones were associated with specific modalities. The study also emphasized the importance of taxa with low dispersal ability in preventing rapid adaptation to changes and recolonization.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
John P. Krasting, Maurizia De Palma, Maike Sonnewald, John P. Dunne, Jasmin G. John
Summary: An unsupervised machine learning technique was used to analyze the outputs of two climate models and identify consistent geographical boundaries of ocean acidification patterns in the Arctic Ocean. The projected boundaries were found to be sensitive to sea ice extent. The study highlights the importance of objective sub-regional identification and subsequent analysis of surface water mass properties in understanding the impacts of ocean acidification on marine life in the Arctic.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Oceanography
Christopher T. Hayes, Robert F. Anderson, Martin Q. Fleisher, Kuo-Fang Huang, Laura F. Robinson, Yanbin Lu, Hai Cheng, R. Lawrence Edwards, S. Bradley Moran
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2015)
Article
Chemistry, Multidisciplinary
Christopher T. Hayes, Robert F. Anderson, Martin Q. Fleisher, Sebastian M. Vivancos, Phoebe J. Lam, Daniel C. Ohnemus, Kuo-Fang Huang, Laura F. Robinson, Yanbin Lu, Hai Cheng, R. Lawrence Edwards, S. Bradley Moran
Article
Oceanography
C. L. Liu, L. Zhai, S. I. Zeeman, L. B. Eisner, J. C. Gann, C. W. Mordy, S. B. Moran, M. W. Lomas
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2016)
Article
Multidisciplinary Sciences
R. F. Anderson, H. Cheng, R. L. Edwards, M. Q. Fleisher, C. T. Hayes, K. -F. Huang, D. Kadko, P. J. Lam, W. M. Landing, Y. Lao, Y. Lu, C. I. Measures, S. B. Moran, P. L. Morton, D. C. Ohnemus, L. F. Robinson, R. U. Shelley
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2016)
Article
Oceanography
B. Loose, R. P. Kelly, A. Bigdeli, W. Williams, R. Krishfield, M. Rutgers van der Loeff, S. B. Moran
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2017)
Article
Geosciences, Multidisciplinary
O. Valk, M. M. Rutgers van der Loeff, W. Geibert, S. Gdaniec, M. J. A. Rijkenberg, S. B. Moran, K. Lepore, R. L. Edwards, Y. Lu, V. Puigcorbe
GEOPHYSICAL RESEARCH LETTERS
(2018)
Article
Environmental Sciences
Christopher T. Hayes, Robert F. Anderson, Hai Cheng, Tim M. Conway, R. Lawrence Edwards, Martin Q. Fleisher, Peng Ho, Kuo-Fang Huang, Seth G. John, William M. Landing, Susan H. Little, Yanbin Lu, Peter L. Morton, S. Bradley Moran, Laura F. Robinson, Rachel U. Shelley, Alan M. Shiller, Xin-Yuan Zheng
GLOBAL BIOGEOCHEMICAL CYCLES
(2018)
Article
Environmental Sciences
Hiu Yan Choi, Gillian M. Stewart, Michael W. Lomas, Roger P. Kelly, S. Bradley Moran
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2014)
Article
Oceanography
Matthew S. Baumann, S. Bradley Moran, Michael W. Lomas, Roger P. Kelly, Douglas W. Bell, Jeffrey W. Krause
JOURNAL OF MARINE RESEARCH
(2014)
Article
Multidisciplinary Sciences
John N. Smith, Robin M. Brown, William J. Williams, Marie Robert, Richard Nelson, S. Bradley Moran
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2015)
Editorial Material
Oceanography
Peter Brewer, Don Chambers, Robert Hetland, Kristopher Karnauskas, Ryan Lowe, S. Bradley Moran, Lie-Yauw Oey, Nadia Pinardi, Andrey Proshutinsky
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2018)
Article
Oceanography
Melanie Grenier, Roger Francois, Maureen Soon, Michiel Rutgers van der Loeff, Xiaoxin Yu, Ole Valk, Christelle Not, S. Bradley Moran, R. Lawrence Edwards, Yanbin Lu, Kate Lepore, Susan E. Allen
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2019)
Article
Meteorology & Atmospheric Sciences
Ole Valk, Michiel M. Rutgers van der Loeff, Walter Geibert, Sandra Gdaniec, S. Bradley Moran, Kate Lepore, Robert Lawrence Edwards, Yanbin Lu, Viena Puigcorbe, Nuria Casacuberta, Ronja Paffrath, William M. Smethie, Matthieu Roy-Barman
Article
Environmental Studies
B. Konar, L. Frisch, S. B. Moran
Article
Ecology
B. L. Mackinson, S. B. Moran, M. W. Lomas, G. M. Stewart, R. P. Kelly
Article
Oceanography
Jason A. Law, Robert H. Weisberg, Yonggang Liu, Dennis A. Mayer, Jeffrey C. Donovan
Summary: Time series data from a moored array of sensors are used to describe the long-term mean circulation and seasonal variations on the West Florida Continental Shelf. The observations reveal a coherent shelf-wide circulation pattern with alongshore and down-coast flow, and a coastal jet separating an upwelling region from a downwelling region influenced by the deeper ocean.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2024)