Long-Term Variations of the Sea Surface Temperature in the East Coast of Korea

Kim, Sang Woo; Im, Jin-Wook; Yoon, Byung-Sun; Jeong, Hee-Dong; Jang, Seong‐Ho

doi:10.7837/kosomes.2014.20.6.601

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…According to Jefferson et al, 2015 [12], common dolphins are widely distributed in tropical to cool-temperature waters. MacLeod et al, 2007 [49], reported that this species in the Alboran Sea preferentially occurred in waters warmer than 12.3 • C. It is well-known that sea surface temperatures in the ES and YS are generally warmer than 10 • C in all seasons except for winter [50,51]. Namely, the coastal regions of the YS and ES are characterized by temperate waters except for in the winter.…”

Section: Discussionmentioning

confidence: 99%

A First Study on Distribution Characteristics of Common Dolphin in Korean Waters: A Study Using Data Collected during the Past 20 Years

Yoo,

Park,

Lee

et al. 2023

JMSE

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The common dolphin (Delphinus delphis) is the second-most bycaught species in Korean waters. To provide key information about their habitat boundaries and hotspots for spatial conservation and management, the spatial use of this species was examined using data obtained from sighting and bycatch surveys of cetaceans in the past 20 years. The 95% minimum convex polygon and 95% density contour of fixed-kernel analysis suggested that the boundary of the home range of common dolphins is limited to the coastal region (Busan–Sokcho) of the East Sea/Sea of Japan. From 50% density contours drawn by kernel density estimation, it was suggested that their hotspots are around the coast of Ulsan–Pohang, Doghae, and Sokcho within the home range. Common dolphins were not observed in the Yellow Sea. Hence, shallow waters in the geographic area of the coastal region of the Yellow Sea are likely not a suitable habitat for common dolphins in this region.

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Section: Discussionmentioning

confidence: 99%

A First Study on Distribution Characteristics of Common Dolphin in Korean Waters: A Study Using Data Collected during the Past 20 Years

Yoo,

Park,

Lee

et al. 2023

JMSE

View full text Add to dashboard Cite

show abstract

“…MacLeod et al (2007) [42] reported that this species in the Alboran Sea preferentially occurred in waters warmer than 12.3°C. It was well known that sea surface temperatures in ES and YS were generally warmer than 10°C in all seasons except for winter [43,44]. Therefore, it seems that there is little relationship between sea temperature and the non-distribution seas of common dolphin in Korean waters.…”

Section: Discussionmentioning

confidence: 99%

A First Study on Home Range Characteristics of Common Dolphin in Korean Waters: A Study Using Data Collected During the Past 20 Years

Yoo¹,

Park²,

Lee³

et al. 2023

Preprint

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The common dolphin is the second most bycaught species in Korean waters. To provide key information about their habitat boundaries and hotspots for spatial conservation and management, the spatial use of this species was examined using data obtained from sighting and bycatch surveys of cetacean during the past 20 years. The 95% minimum convex polygon and 95% density contour of fixed kernel suggested that the boundary of home range of common dolphins is limited to the coastal region (Busan-Sokcho) of the East Sea/Sea of Japan. From 50% density contours dawn by kernel density estimation, it was suggested that their hotspots are around the cost of Ulsan-Pohang, Doghae, and Sokcho within the home range. Common dolphins are not at all distributed in the Yellow Sea. Hence, shallow waters, such as the coastal region of the Yellow Sea, are not suitable habitats for common dolphins.

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“…However, since the target area selected in this study was located on the coast, the effect of these warm current was small. Studies have shown that ocean depth has a significant effect on SST [40,41], and shallow coasts respond quickly to atmospheric changes due to their low heat storage capacity [42]. The ocean depth of the target area is also very shallow, and its SST tends to rise rapidly in midsummer.…”

Section: Study Areamentioning

confidence: 99%

Sea Surface Temperature and High Water Temperature Occurrence Prediction Using a Long Short-Term Memory Model

2020

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Recent global warming has been accompanied by high water temperatures (HWTs) in coastal areas of Korea, resulting in huge economic losses in the marine fishery industry due to disease outbreaks in aquaculture. To mitigate these losses, it is necessary to predict such outbreaks to prevent or respond to them as early as possible. In the present study, we propose an HWT prediction method that applies sea surface temperatures (SSTs) and deep-learning technology in a long short-term memory (LSTM) model based on a recurrent neural network (RNN). The LSTM model is used to predict time series data for the target areas, including the coastal area from Goheung to Yeosu, Jeollanam-do, Korea, which has experienced frequent HWT occurrences in recent years. To evaluate the performance of the SST prediction model, we compared and analyzed the results of an existing SST prediction model for the SST data, and additional external meteorological data. The proposed model outperformed the existing model in predicting SSTs and HWTs. Although the performance of the proposed model decreased as the prediction interval increased, it consistently showed better performance than the European Center for Medium-Range Weather Forecast (ECMWF) prediction model. Therefore, the method proposed in this study may be applied to prevent future damage to the aquaculture industry.

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Long-Term Variations of the Sea Surface Temperature in the East Coast of Korea

Cited by 7 publications

References 9 publications

A First Study on Distribution Characteristics of Common Dolphin in Korean Waters: A Study Using Data Collected during the Past 20 Years

A First Study on Distribution Characteristics of Common Dolphin in Korean Waters: A Study Using Data Collected during the Past 20 Years

A First Study on Home Range Characteristics of Common Dolphin in Korean Waters: A Study Using Data Collected During the Past 20 Years

Sea Surface Temperature and High Water Temperature Occurrence Prediction Using a Long Short-Term Memory Model

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