scholarly journals Study on the Behavior of the Water Temperature Inversion Layer in the Northern East China Sea

2020 ◽  
Vol 8 (3) ◽  
pp. 157 ◽  
Author(s):  
Seong Hyeon Kim ◽  
Bok Kyoung Choi ◽  
Eung Kim
Keyword(s):  
Water Temperature ◽  
Correlation Coefficient ◽  
East China Sea ◽  
Inversion Layer ◽  
Temperature Inversion ◽  
The Other ◽  
Jeju Island ◽  
East China ◽  
China Sea ◽  
Other Hand

To investigate the behavioral characteristics of the water temperature inversion layer (TIL), we used data (KODC) from areas in the Northern East China Sea from 1995 to 2016. Water temperature and salinity surveys were conducted 8820 casts over 22 years. Of these, 1589 water temperature inversion layers were found, and the probability of occurrence was 18.0%. In the Gageo island, probability of TIL occurrence in winter was 25 times higher than in summer. On the other hand, in the south of Jeju Island, summer values were 3.7 times higher than winter values. A T–S diagram analysis shows the components of the water temperature inversion layers. Yellow Sea Cold Water was mainly found in the winter, while Jeju Warm Currents and Tsushima Warm Currents were found in summer. The correlation between the probability of the occurrence of a monthly water temperature inversion layer and the amount of seawater volume transported into the study area was analyzed. The correlation coefficient was higher than r = 0.8 in parts of southern Jeju Island. On the other hand, the correlation coefficient was r = −0.6 in the Gageo Island. The spatial correlation index for the seawater volume transport and the water temperature inversion layer is presented.

Effects of water temperature inversion layer on underwater sound propagation in the East China Sea

2017 ◽  
Vol 56 (7S1) ◽  
pp. 07JG05 ◽  
Author(s):  
Seong Hyeon Kim ◽  
Byoung-Nam Kim ◽  
Eung Kim ◽  
Bok Kyoung Choi ◽  
Dong Sun Kim
Keyword(s):  
Water Temperature ◽  
East China Sea ◽  
Sound Propagation ◽  
Inversion Layer ◽  
Temperature Inversion ◽  
East China ◽  
Underwater Sound ◽  
The East China Sea ◽  
China Sea

Molecular diversity of phytoplankton in the East China Sea around Jeju Island (Korea), unraveled by pyrosequencing

2013 ◽  
Vol 70 (1) ◽  
pp. 11-23 ◽  
Author(s):  
Daphne Georgina Faria ◽  
Man-Duck Lee ◽  
Joon-Baek Lee ◽  
Juyun Lee ◽  
Man Chang ◽  
...  
Keyword(s):  
East China Sea ◽  
Molecular Diversity ◽  
Jeju Island ◽  
East China ◽  
The East China Sea ◽  
China Sea

First record of the genus Leiocapitella (Annelida: Capitellidae) from China with description of a new species

Zootaxa ◽  
2019 ◽  
Vol 4604 (1) ◽  
pp. 191
Author(s):  
JUNHUI LIN ◽  
MARÍA E. GARCÍA-GARZA ◽  
JIANJUN WANG
Keyword(s):  
New Species ◽  
Continental Shelf ◽  
East China Sea ◽  
First Record ◽  
The Other ◽  
East China ◽  
Methyl Green ◽  
The East China Sea ◽  
China Sea ◽  
A New Species

The capitellid genus Leiocapitella is characterized by the possession of anterior 12–16 chaetigers exclusively with capillaries and the following 1–2 transitional chaetigers with notopodial capillaries and neuropodial hooded hooks. A new species was obtained from the continental shelf of the East China Sea, and is identified herein as Leiocapitella fujianensis. The new species differs from the other four described species by the number and location of transitional chaetigers, the dentition of abdominal hooks, and the methyl green stain on thorax. A key to all Leiocapitella species is provided in this paper.

A new species of Farranula (Copepoda, Cyclopoida, Corycaeidae) and a redescription of Farranula carinata from off Jeju Island, Korea

2013 ◽  
Vol 93 (7) ◽  
pp. 1813-1824 ◽  
Author(s):  
Jin Hee Wi ◽  
Ho Young Soh
Keyword(s):  
New Species ◽  
East China Sea ◽  
Morphological Variability ◽  
Morphological Characteristics ◽  
Jeju Island ◽  
East China ◽  
The East China Sea ◽  
China Sea ◽  
The Indian Ocean ◽  
A New Species

Two species of Farranula, including a new species, are described from off Jeju Island, Korea (East China Sea). Farranula orbisa sp. nov. can be distinguished from its congeners F. curta (Farran, 1911) and F. rostrata (Claus, 1863) by a combination of morphological characteristics as follows: in females, (1) eyes located on the frontal part of prosome adhered to each other, (2) second urosomal somite distinctly rounded from the anterior to mid-region in lateral and dorsal view, (3) second urosomal somite ornamented with fine spinules on anteroventral margin; in males, (4) sharply contracted portion of second somite located at two-thirds distance from anterior margin, (5) caudal rami relatively longer compared to width at its base. The new species F. orbisa was erroneously identified as F. rostrata (Claus, 1863) from the East China Sea and as F. curta (Farran, 1911) from the Indian Ocean. The poorly described F. carinata (Giesbrecht, 1891) from the East China Sea is redescribed here based on both sexes of specimens and compared to its morphological variability with specimens from other regions.

scholarly journals Spatiotemporal Variation in Phytoplankton Community Driven by Environmental Factors in the Northern East China Sea

Water ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2695
Author(s):  
Yejin Kim ◽  
Seok-Hyun Youn ◽  
Hyun Oh ◽  
Jae Kang ◽  
Jae Lee ◽  
...  
Keyword(s):  
Community Structure ◽  
Water Temperature ◽  
East China Sea ◽  
Phytoplankton Community ◽  
East China ◽  
Nutrient Concentrations ◽  
Nutrient Distribution ◽  
Pigment Analysis ◽  
China Sea ◽  
Phytoplankton Communities

The East China Sea (ECS) is the largest marginal sea in the northern western Pacific Ocean. In comparison to various physical studies, little information on the seasonal patterns in community structure of phytoplankton is currently available. Based on high performance liquid chromatography (HPLC) pigment analysis, spatiotemporal variations in phytoplankton community compositions were investigated in the northern ECS. Water temperature and salinity generally decreased toward the western part of the study area but warmer conditions in August led to strong vertical stratification of the water column. In general, major inorganic nutrient concentrations were considerably higher in the western part with a shallow water depth, and consistent with previous results, had no discernable vertical pattern during our observation period except in August. This study also revealed PO4-limited environmental conditions in May and August. The monthly averaged integral chlorophyll-a concentration varied seasonally, highest (35.2 ± 20.22 mg m−2) in May and lowest (5.2 ± 2.54 mg m−2) in February. No distinct vertical differences in phytoplankton community compositions were observed for all the sampling seasons except in August when cyanobacteria predominated in the nutrient-deficient surface layer and diatoms prevailed at deep layer. Canonical correlation analysis results revealed that nutrient distribution and the water temperature were the major drivers of the vertical distribution of phytoplankton communities in August. Spatially, a noticeable difference in phytoplankton community structure between the eastern and western parts was observed in November with diatom domination in the western part and cyanobacteria domination in the eastern part, which were significantly (p < 0.01) correlated with water temperature, salinity, light conditions, and nutrient concentrations. Overall, the two major phytoplankton groups were diatoms (32.0%) and cyanobacteria (20.6%) in the northern ECS and the two groups were negatively correlated, which holds a significant ecological meaning under expected warming ocean conditions.

Internal waves and temperature inversion in the East China Sea

2000 ◽  
Vol 107 (5) ◽  
pp. 2894-2894
Author(s):  
Tao Wang ◽  
Tian‐Fu Gao ◽  
De‐Jun Jiang ◽  
Yun‐Peng Zhang
Keyword(s):  
East China Sea ◽  
Internal Waves ◽  
Temperature Inversion ◽  
East China ◽  
The East China Sea ◽  
China Sea

The effect of water temperature on habitat use of young Pacific bluefin tuna Thunnus orientalis in the East China Sea

2006 ◽  
Vol 72 (6) ◽  
pp. 1166-1176 ◽  
Author(s):  
Takashi KITAGAWA ◽  
Aida SARTIMBUL ◽  
Hideaki NAKATA ◽  
Shingo KIMURA ◽  
Harumi YAMADA ◽  
...  
Keyword(s):  
Habitat Use ◽  
Water Temperature ◽  
East China Sea ◽  
Bluefin Tuna ◽  
East China ◽  
Pacific Bluefin Tuna ◽  
The East China Sea ◽  
Thunnus Orientalis ◽  
China Sea ◽  
Effect Of Water
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