Methane distribution and sea-to-air flux in the East China Sea during the summer of 2013: Impact of hypoxia

Ye, Wangwang; Zhang, Guiling; Zhu, Zhuoyi; Huang, Daji; Han, Yu; Wang, Lan; Sun, Miao

doi:10.1016/j.dsr2.2015.01.008

Cited by 36 publications

(38 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The concentrations of dissolved CH 4 varied from 4.80 to 27.80 nmol/L (6.94–27.80 nmol/L in the coastal area; 4.80–17.90 nmol/L in the open ocean) in the bottom waters (Figure ). Bottom CH 4 concentrations exhibited a gradient from inshore to offshore regions, with the highest bottom CH 4 concentration observed at S1–1, near the hypoxic area (Ye et al, ). The bottom waters were mostly CH 4 enriched compared to the surface waters, emphasizing that there were important sources of methane in deep waters, presumably from the bottom sediments.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Spatial Distribution and Biogeochemical Cycling of Dimethylated Sulfur Compounds and Methane in the East China Sea During Spring

Xing

Zhang

et al. 2019

JGR Oceans

View full text Add to dashboard Cite

The spatial distributions of dimethylsulfide (DMS), dimethylsulfoniopropionate (DMSP), dimethylsulfoxide (DMSO), and methane (CH4) were studied in the East China Sea during May 2017, and the possible controlling factors and biogeochemical cycling processes are discussed. The mean surface concentrations of DMS and CH4 were 10.66 and 9.93 nmol/L in the coastal area and 7.60 and 6.88 nmol/L in the open ocean, respectively. Horizontal and vertical profiles of the dimethylated sulfur compounds and CH4 were largely affected by different water masses, with enhancement observed in the coastal area. Significant correlations were found between CH4 and particulate DMSP (r = 0.609, p < 0.01, n = 42), and between CH4 and dissolved DMSO (r = 0.654, p < 0.01, n = 42). A dissolved DMSP (DMSPd) spike experiment revealed that the bacterial communities had potential to utilize DMSPd, meanwhile producing CH4 under oligotrophic conditions. The average mixing ratio of atmospheric DMS was 109 ± 49 pptv. Variations of marine DMS and wind speed explained 23 and 40% of the variation in the mixing ratios of atmospheric DMS, respectively. The sea‐to‐air fluxes of DMS and CH4 were estimated to be 18.64 ± 14.92 and 13.85 ± 15.03 μmol m−2 d−1, respectively.

show abstract

Section: Resultsmentioning

confidence: 99%

“…CH 4 concentrations were determined using an Agilent 7890A GC equipped with a flame ionization detector. A purge‐and‐trap gas system was used to preconcentrate the CH 4 before it was injected into the GC (Ye et al, ; G. L. Zhang, ). Ultrahigh‐purity He was used as the purge and carrier gas.…”

Section: Methodsmentioning

confidence: 99%

Spatial Distribution and Biogeochemical Cycling of Dimethylated Sulfur Compounds and Methane in the East China Sea During Spring

Xing

Zhang

et al. 2019

JGR Oceans

View full text Add to dashboard Cite

show abstract

“…During the cruise, there was a low oxygen region (oxygen concentration less than 94 μmol/kg) in the northern part of the ECS, which extended from the Changjiang Estuary toward the northeast, and to the southeast along the bottom waters (Figure ; Ye et al, ). Station A3, with oxygen concentrations less than 44.4 μmol/kg from 6 m to the bottom, is located in the core center of this area.…”

Section: Resultsmentioning

confidence: 99%

“…Topographic features, schematic of circulation, and sampling stations (solid circles) in the East China Sea during the August 2013 cruise, monthly sampling site at Xuliujing (XLJ; solid triangle) in Changjiang Estuary, and comparison stations (solid pentagram) from literatures are shown. The dark blue arrows denote Changjiang Diluted Water, Yellow Sea coastal current, Tsushima warm current, Taiwan Strait Warm Water, and Kuroshio; the red arrows indicate main cross‐shelf exchange locations; 100 and 200 isobaths are signified by blue dotted lines; KS denotes Korea/Tsushima Strait, and TWS denotes Taiwan Strait; the 26‐psu and 31‐psu isohalines are signified by yellow dotted lines; bottom water oxygen concentrations lower than 63 and 94 μmol/kg are signified by dark and light gray shading, respectively (Chien et al, ; Guo et al, ; Ren et al, ; Wei et al, ; Ye et al, ; Zhou et al, ).…”

Section: Methodsmentioning

confidence: 99%

Dissolved Lead in the East China Sea With Implications for Impacts of Marginal Seas on the Open Ocean Through Cross‐Shelf Exchange

Jiang

Zhang

et al. 2018

JGR Oceans

View full text Add to dashboard Cite

The distribution of lead (Pb) in the ocean is influenced by human activities. During a cruise in the East China Sea (ECS) in August 2013, we investigated six representative stations and gave the first systematic description of dissolved lead (DPb) distributions after the phasing out of leaded gasoline in China. The DPb concentration in the ECS ranged from 23.8 to 96.7 pmol/kg, with the highest concentrations observed at the surface of the middle shelf, while the lowest concentrations were determined to be in deep samples collected at the shelf break. Vertical profiles of DPb vary with geographic locations, seawater turbidity, hypoxic conditions, atmospheric deposition, and hydrographic regimes. As one of the most important western boundary currents, Kuroshio receives an additional 10–20 pmol/kg of DPb from the ECS shelf through a cross‐shelf exchange process, and approximately (1.1–1.7) × 109 g/yr of DPb was exported through the shelf break area, which will directly join the North Pacific circulation based on a preliminary box model. In addition, the ECS shelf exported another 1.4 × 109 g/yr of DPb from the Tsushima/Korea Strait, which has the potential to influence the northwestern Pacific Ocean as well as the Sea of Japan/East Sea. A residence time of 2–3 months for DPb in the ECS was inferred.

show abstract

“…CH 4 concentrations of SGB were 2-to 10-fold of those in the adjacent marginal shelf sea, i.e. the Yellow Sea (3.4−12.0 nM; Zhang et al 2004, Yang et al 2010, Ye et al 2016.…”

Section: Comparison With Previous Researchmentioning

confidence: 99%

Methane distribution, sources, and sinks in an aquaculture bay (Sanggou Bay, China)

Hou¹,

Zhang²,

Sun³

et al. 2016

Aquacult. Environ. Interact.

View full text Add to dashboard Cite

Methane distribution and sea-to-air flux in the East China Sea during the summer of 2013: Impact of hypoxia

Cited by 36 publications

References 35 publications

Spatial Distribution and Biogeochemical Cycling of Dimethylated Sulfur Compounds and Methane in the East China Sea During Spring

Spatial Distribution and Biogeochemical Cycling of Dimethylated Sulfur Compounds and Methane in the East China Sea During Spring

Dissolved Lead in the East China Sea With Implications for Impacts of Marginal Seas on the Open Ocean Through Cross‐Shelf Exchange

Methane distribution, sources, and sinks in an aquaculture bay (Sanggou Bay, China)

Contact Info

Product

Resources

About