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1

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Changing Asia-Pacific Marginal Seas (2020)

Chen, Chen-Tung Arthur. [editor.] ; Guo, Xinyu. [editor.]

Singapore :Springer Nature Singapore :

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Keywords: Oceanography. ; Physical geography. ; Ocean Sciences. ; Earth System Sciences.

Description / Table of Contents: Sea of Okhotsk -- Japan Sea -- East China Sea -- Yellow and Bohai Seas -- South China Sea -- Kuroshio and its affected Shelf Sea -- Oyashio and its affected Shelf Sea.

Abstract: This book discusses temporal changes in six Asia-Pacific marginal seas and two west boundary currents in the Northwest Pacific. Covering time scales varying from years to decades, it provides a comprehensive review of the long-term changes in various physical variables, including sea level, sea surface temperature, water mass index, current and transport, as well as local issues such as sea ice and tidal mixing, and the processes and dynamics that govern them. The book also examines biogeochemical variables, such as nutrients, oxygen, pH, water transparency, ocean acidification, eutrophication and productivity, and explores future trends. Offering a holistic view of the changes that have occurred in the Asia-Pacific marginal seas and those that are likely to occur in the future, this book will appeal to readers from all fields of oceanography.

Type of Medium: Online Resource

Pages: VI, 320 p. 128 illus., 109 illus. in color. , online resource.

Edition: 1st ed. 2020.

ISBN: 9789811548864

Series Statement: Atmosphere, Earth, Ocean & Space,

URL: https://doi.org/10.1007/978-981-15-4886-4

DOI: 10.1007/978-981-15-4886-4

DDC: 551.46

Language: English

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Modeling and Analysis of Marine Environmental Problems (2011)

Omori, Koji ; Guo, Xinyu ; Yoshie, Naoki ; [et al.]

Tokyo : TERRAPUB

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Keywords: marine environment ; environmental pollution ; marine pollution

Description / Table of Contents: Ecosystem Modeling of the Oregon Shelf: Everything but the Kitchen Sink / Y. H. Spitz / pp. 1-9 --- Marine Ecosystem Simulation in the Indonesian Seas / Y. Sasai, A. R. Kartadikaria, Y. Miyazawa and K. Nadaoka / pp. 11-17 --- Response of Nutrients and Primary Production over the Shelf in the East China Sea to the Reduction of Oceanic Nutrient Supply / X. Guo and L. Zhao / pp. 19-30 --- Introduction of the Ecological Connectivity Hypoxia Model: ECOHYM—Model Concept and Its Validation on a Study Applied to Tokyo Bay / A. Sohma / pp. 31-38 --- Ecosystem and Nutrient Dynamics in the Seto Inland Sea, Japan / N. Yoshie, X. Guo, N. Fujii and T. Komorita / pp. 39-49 --- A Numerical Modeling Study of Japanese Sardine (Sardinops melanostictus) Migrations in the Western North Pacific / T. Okunishi, D. Ambe, S. Ito, T. Kameda, T. Setou, K. Komatsu, A. Kawabata, A. Takasuka and H. Kubota / pp. 51-56 --- Investigating Alternate Trophic Pathways through Gelatinous Zooplankton and Planktivorous Fishes in an Upwelling Ecosystem Using End-to-End Models / R. D. Brodeur, J. J. Ruzicka and J. H. Steele / pp. 57-63 --- Establishing a Conceptual Design for Jellyfish Blooms in the Seto Inland Sea / N. Fujii, A. Kaneda, S. Magome and H. Takeoka / pp. 65-71 --- Fate Prediction Model of Organic Chemicals in Coastal Bay Estuaries / K. Nakata, F. Horiguchi and T. Eriguchi / pp. 73-77 --- Ecosystem Analysis of the Seto Inland Sea: Bioaccumulation Model on a Basis of an Energy Balance Model / K. Omori, J. Shibata, H. Hamaoka, K. Matsumoto, T. Nanko, T. Kunihiro, T. W. Miller and H. Onishi / pp. 79-83 --- Trophic Dynamics of Pelagic Nekton in the Southern Benguela Current Ecosystem: Calibrating Trophic Models with Stable Isotope Analysis / C. D. van der Lingen and T. W. Miller / pp. 85-94 --- Tracing Dynamics of Organic Material Flow in Coastal Marine Ecosystems: Results from Manila Bay (Philippines) and Kyucho Intrusion (Japan) / T. W. Miller, G. Jaquinto, M. McGlone, A. Isobe, J. Shibata, H. Hamaoka and K. Omori / pp. 95-104 --- Variations of Seawater Temperature and Coastal Winds from 2003 to 2009 at the Bungo Channel, Japan / R. Shi, X. Guo and H. Takeoka / pp. 105-115 --- Spatial Variation of Submarine Groundwater Discharge (SGD) in the Central Part of Seto Inland Sea, Japan / M. Saito, X. Guo, S. Onodera, Y. Shimizu, Y. Kato, M. Tokumasu and H. Takeoka / pp. 117-123 --- Understanding What Drives Food Web Structure in Marine Pelagic Ecosystems / T. W. Miller, C. van der Lingen, R. Brodeur, K. Omori, H. Hamaoka and T. Isobe / pp. 125-131 --- Study of Sediment Cleanup Using Polychaetes / K. Ito, M. Nozaki, T. Kunihiro, C. Miura and T. Miura / pp. 133-139 --- Regional Characteristics of Lower Trophic Level Food Web Structure in the Seto Inland Sea / J. Shibata, H. Hamaoka, R. Isonaka, K. Matsumoto, T. Nanko, T. W. Miller, H. Onishi, T. Kunihiro and K. Omori / pp. 141-149 --- Sources of Sedimentary Organic Carbon in Mangrove Ecosystems from Ba Lat Estuary, Red River, Vietnam / N. T. Tue, H. Hamaoka, A. Sogabe, T. D. Quy, M. T. Nhuan and K. Omori / pp. 151-157 --- The Fish Composition of Phan Thiet Bay, Binh Thuan Province, Vietnam in Connection with Environmental Quality / N. T. Nam, N. X. Huan, V. T. Tang, T. W. Miller and K. Omori / pp. 159-167 --- The Roles of Marine Phytoplankton and Ocean Circulation in Determining the Global Fate of Polychlorinated Biphenyls / T. Kawai, I. C. Handoh and N. Suzuki / pp. 169-178 --- Bayesian Uncertainty Analysis of the Global Dynamics of Persistent Organic Pollutants: Towards Quantifying the Planetary Boundaries for Chemical Pollution / I. C. Handoh and T. Kawai / pp. 179-187 --- What Drives the Fate of Persistent Organic Pollutants in the North Sea? Insights from a Regional Model / T. Ilyina / pp. 189-195 --- Process Study on Numerical Simulation for Persistent Organic Pollutants in the East China Sea / J. Ono, D. Takahashi, X. Guo, S. Takahashi and H. Takeoka / pp. 197-204 --- Monitoring of Contamination by Non-PBDE Brominated Flame Retardants in Asian Coastal Waters Using Mussels as a Bioindicator / S. Ogawa, T. Isobe, K. Ramu, A. Subramanian, S. Takahashi and S. Tanabe / pp. 205-211 --- Inter-species Differences of Hydroxylated Polychlorinated Biphenyls (OHPCBs) in the Blood of Small Cetaceans / M. Ochiai, K. Nomiyama, T. Isobe, T. Matsuishi, T. K. Yamada and S. Tanabe / pp. 213-220 --- Accumulation of Brominated Flame Retardants in Harbour and Dall's Porpoises from Hokkaido / A. Saito, T. Isobe, T. Matsuishi, T. K. Yamada, Y. Tajima and S. Tanabe / pp. 221-228 --- Contamination by Brominated Flame Retardants (BFRs) in Common Cormorants from Lake Biwa / R. Hashikawa, T. Isobe, S. Yano, T. Kunisue, K. Nakayama, A. Sudo, S. Takahashi and S. Tanabe / pp. 229-238 --- Formulation of Leeway-Drift Velocities for Sea-Surface Drifting-Objects Based on a Wind-Wave Flume Experiment / A. Isobe, H. Hinata, S. Kako and S. Yoshioka / pp. 239-249 --- Investigating the Accumulation of Plastic Debris in the North Pacific Gyre / J. J. Leichter / pp. 251-259 --- Deep-Sea Litter Study Using Deep-Sea Observation Tools / H. Miyake, H. Shibata and Y. Furushima / pp. 261-269 --- Toxic Metals in Polyethylene Plastic Litter / E. Nakashima, A. Isobe, S. Kako, S. Magome, N. Deki, T. Itai and S. Takahashi / pp. 271-277

Pages: Online-Ressource (IX, 277 Seiten)

ISBN: 9784887041547

URL: http://www.terrapub.co.jp/onlineproceedings/ec/05/

Language: English

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Seasonal variation of residual current in Tokyo Bay, Japan —diagnostic numerical experiments— (1996)

Guo, Xinyu ; Yanagi, Tetsuo

Springer

Journal of oceanography 52 (1996), S. 597-616

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ISSN: 1573-868X

Source: Springer Online Journal Archives 1860-2000

Topics: Geosciences

Notes: Abstract The residual currents in Tokyo Bay during four seasons are calculated diagnostically from the observed water temperature, salinity and wind data collected by Unokiet al. (1980). The calculated residual currents, verified by the observed ones, show an obvious seasonal variable character. During spring, a clear anticlockwise circulation develops in the head region of the bay and a strong southwestward current flows in the upper layer along the eastern coast from the central part to the mouth of the bay. During summer, the anticlockwise circulation in the head region is maintained but the southwestward current along the eastern coast becomes weak. During autumn, the preceding anticlockwise circulation disappears but a clockwise circulation develops in the central part of the bay. During winter, the calculated residual current is similar to that during autumn. As a conclusion, the seasonal variation of residual current in Tokyo Bay can be attributed to the variation of the strength of two eddies. The first one is the anticlockwise circulation in the head region of the bay, which develops in spring and summer and disappears in autumn and winter. The second one is the clockwise circulation in the central part of the bay, which develops in autumn and winter, decreases in spring and nearly disappears in summer.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02238323

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Distribution and Origin estimate of Perfluoro compounds (PFCs) in East China Sea (2019)

Yamao, Satoshi ; Shimizu, Junko ; Guo, Xinyu ; [et al.]

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Publication Date: 2021-05-19

Description: PFCs distribution in water and sediment as well as water mass structures were observed at the stations in the East China Sea and its adjacent continental shelf edge in December 2008．In surface water, the concentration of PFHxA, PFHpA, PFOA and PFOS were relatively higher in the southern area, while PFNA concentration was higher in the northern area. In sediment samples, three types of PFCs distribution were obtained : PFOS and PFHpA showed higher concentration in Kuroshio upstream area ; peak concentration of PFNA and PFUnA were observed in Okinawa Trough ; PFHxA and PFOA showed relatively high concentration in shallower side of the continental shelf edge. Based on the distributions of PFCs, sources of particulate PFCs inside the Kuroshio water were estimated. Particulate PFHpA and PFOS were loaded to the Kuroshio water mass from more upstream of Kuroshio Current than the study area suspended PFNA was from the East China Sea continental shelf, according to the particle transportation excess the continental shelf edge particulate PFHxA and PFOA were from both the upstream of Kuroshio Current and the continental shelf. Using PFHxA, PFHpA, PFOA and PFOS as tracers, the origin of suspended solid contained inside the Kuroshio water was examined with a mixing model. The result suggested that almost all of suspended solid loaded from upstream of the Kuroshio Current disappeared from the water column in the middle reach of the Kuroshio in the East China Sea while all of suspended solid found in the Tokara Strait were originated from the East China Sea continental shelf. Key words : PFCs distribution, East China Sea, Kuroshio, origin of PFCs, origin of suspended solid

Description: Published

Repository Name: AquaDocs

Type: Journal Contribution , Refereed

Format: pp. 13-24

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On the origin of aged sedimentary organic matter along a river-shelf-deep ocean transect (2020)

Bao, Rui ; Zhao, Meixun ; McNichol, Ann P. ; [et al.]

American Geophysical Union

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Publication Date: 2022-10-26

Description: Author Posting. © American Geophysical Union, 2019. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Biogeosciences 124(8), (2019): 2582-2594, doi: 10.1029/2019JG005107.

Description: To assess the influences of carbon sources and transport processes on the 14C age of organic matter (OM) in continental margin sediments, we examined a suite of samples collected along a river‐shelf‐deep ocean transect in the East China Sea (ECS). Ramped pyrolysis‐oxidiation was conducted on suspended particulate matter in the Yangtze River and on surface sediments from the ECS shelf and northern Okinawa Trough. 14C ages were determined on OM decomposition products within different temperature windows. These measurements suggest that extensive amounts of pre‐old (i.e., millennial age) organic carbon (OC) are subject to degradation within and beyond the Yangtze River Delta, and this process is accompanied by an exchange of terrestrial and marine OM. These results, combined with fatty acid concentration data, suggest that both the nature and extent of OM preservation/degradation as well as the modes of transport influence the 14C ages of sedimentary OM. Additionally, we find that the age of (thermally) refractory OC increases during across‐shelf transport and that the age offset between the lowest and highest temperature OC decomposition fractions also increases along the shelf‐to‐trough transect. Amplified interfraction spread or 14C heterogeneity is the greatest in the Okinawa Trough. Aged sedimentary OM across the transect may be a consequence of several reasons including fossil OC input, selective degradation of younger OC, hydrodynamic sorting processes, and aging during lateral transport. Consequently, each of them should be considered in assessing the 14C results of sedimentary OM and its implications for the carbon cycle and interpretation of sedimentary records.

Description: This study was supported by Doc. Mobility Fellowship (P1EZP2_159064; R. B.) from the Swiss National Science Foundation (SNSF). This study was also supported by SNF “CAPS‐LOCK” project 200021_140850 (T. I. E.), by the National Natural Science Foundation of China (NSFC; grants 41520104009 and 41630966, M. Z.), and by the “111” project (B13030). We are grateful for support of the NOSAMS staff in the execution of this project. We also appreciate the assistance from Yushuang Zhang (Ocean University of China) at NOSAMS and members of the Laboratory for Ion Beam Physics at ETH Zurich for AMS measurements. We acknowledge Lei Xing, Haidong Zhang, Guodong Song, Meng Yu, Yonghao Jia, and Shanshan Duan (Ocean University of China) for sampling assistance on the cruises. Assistance at sea by the crews of R/V Dongfanghong II and R/V Hakuhu Maru is also acknowledged. Readers can access or find the data from figures and tables in the supporting information.

Keywords: Radiocarbon ; Carbon cycle ; Sediments ; Organic carbon ; Hydrodynamic processes

Repository Name: Woods Hole Open Access Server

Type: Article

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Seasonal variability in the inorganic ocean carbon cycle in the Northwest Pacific evaluated using a biogeochemical and carbon model coupled with an operational ocean model (2020)

Ishizu, Miho ; Miyazawa, Yasumasa ; Tsunoda, Tomohiko ; [et al.]

Springer

In: Climatic Change. 2020; 162(2): 877-902. Published 2020 Jul 09. doi: 10.1007/s10584-020-02779-2.

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Publication Date: 2020-07-09

Description: Here, we investigate the seasonal variability in the dissolved inorganic carbon (DIC) cycle in the Northwest Pacific using a high-resolution biogeochemical and carbon model coupled with an operational ocean model. Results show that the contribution to DIC from air–sea CO2 exchange is generally offset by vertical mixing at the surface at all latitudes, with some seasonal variation. Biological processes in subarctic regions are evident at the surface, whereas in the subtropical region these processes take place within the euphotic layer and then DIC consumption deepens southward with latitude. Such latitudinal differences in biological processes lead to marked horizontal and vertical contrasts in the distribution of DIC, with modulation by horizontal and vertical advection–diffusion processes.

Print ISSN: 0165-0009

Electronic ISSN: 1573-1480

Topics: Geosciences , Physics