Analysis of floating debris behaviour in the Nakdong River basin of the southern Korean peninsula using satellite location tracking buoys

Jang, Seon Woong; Kim, Dae Hyun; Seong, Ki Taek; Chung, Yong Hyun; Yoon, Hong-Joo

doi:10.1016/j.marpolbul.2014.08.031

Cited by 15 publications

(4 citation statements)

References 23 publications

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“…It has been estimated that approximately 80% of marine plastic debris originates from land-based human activities 10,11 . The input of marine plastic debris from coastal areas varies substantially, depending on geographic factors related to humans (e.g., the coastal population, amount of waste generated, percentage of unmanaged waste 10 ) as well as the environment (e.g., river discharge that could deliver land-derived debris into the oceans 12,13 ).…”

Section: Introductionmentioning

confidence: 99%

Major sources and monthly variations in the release of land-derived marine debris from the Greater Jakarta area, Indonesia

Cordova

Nurhati

2019

Sci Rep

126

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As marine debris becomes increasingly prevalent and induces cascading impacts on marine ecosystems, monitoring of land-derived debris is key for identifying effective mitigation strategies. Indonesia plays a pivotal role in reducing land-derived debris into the oceans considering its extensive coastline, large population and high waste production. We present the first marine debris monitoring data from Indonesia’s capital, the Greater Jakarta area, by characterizing major sources and monthly variations of debris release at nine river outlets into Jakarta Bay between June 2015-June 2016. Our data show plastics as the most common debris entering Jakarta Bay representing 59% (abundance) or 37% (weight) of the total collected debris. Styrofoam was dominating among plastic debris, highlighting the urgency of reducing plastic and styrofoam uses. Higher debris releases during the rainy season (December-February) highlight the need to intensify river clean-up activities. We estimated an average daily debris release of 97,098 ± 28,932 items or 23 ± 7.10 tons into Jakarta Bay with considerably lower inputs from the capital compared to its neighboring municipalities. Within the plastics category, field monitoring data yield a daily plastic debris release of 8.32 ± 2.44 tons from the Greater Jakarta area, which is 8–16 times less than global-scale model estimates.

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Section: Introductionmentioning

confidence: 99%

Major sources and monthly variations in the release of land-derived marine debris from the Greater Jakarta area, Indonesia

Cordova

Nurhati

2019

Sci Rep

126

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“…Nakdong River locates at the southern east part of the Korean Peninsula and is the second largest river in Korea with length of 521.5 km and size of 23,717 km 2 [10]. Total quantity of Nakdong River is 385 tons per year, and 9.5 billion tons (24.7%) of water for use (industrial, agricultural, living and drinking purposes) are supplied to big cities converged with major industries and population such as Busan and Daegu Metropolitan Cities [11].…”

Section: Study Sitementioning

confidence: 99%

Algal Bloom Monitoring using UAVs Imagery

Jang¹,

Yoon²,

Kwak³

et al. 2016

Advanced Science and Technology Letters

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Abstract. The purpose of this study is to enhance control capability of river water quality and environment by developing algal bloom monitoring technology using Unmanned Aerial Vehicle. The study acquired remote sensing data using UAV on the midstream area of Nakdong River, one of four major rivers in South Korea. The study also conducted water quality analysis and spectral reflectance measuring in the field to identify emergence aspect of phytoplankton in waters of the river and to induce algal bloom detection index equation through wavelength mixing of sensors. It is expected that when this remote water quality and pollution monitoring technology is applied in the field, it would be able to improve capabilities to deal with the river water quality and pollution at the early stage.

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“…Although the South Korean government imposed a ban on new EPS buoys in November 2022, challenges remain in managing existing buoys and adopting eco-friendly alternatives. These drifting buoys not only pose economic threats to marine ecosystems and the tourism sector [3] but are also fragmented into smaller-sized microplastics through physical, chemical, and biological processes [4]. EPS microplastics are frequently reported along the South Korean coast [5,6].…”

Section: Introductionmentioning

confidence: 99%

Distribution and Environmental Impact of Expanded Polystyrene Buoys from Korean Aquaculture Farms

Seo,

Park

2024

JMSE

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Expanded polystyrene (EPS) buoys, commonly employed in South Korean aquaculture farms, are prone to fragmentation, generating substantial marine debris. The trajectories of EPS buoys dislocated from aquaculture farms were investigated using a Lagrangian particle-tracking model. Daily ocean current data from the 1/12° Hybrid Coordinate Ocean Model analysis and wind data from the 1/4° European Center for Medium-Range Weather Forecasts reanalysis were used as inputs. The particles were released daily, and the initial positions and number of particles were determined based on the usage of EPS buoys. Because EPS buoys are highly buoyant, both wind and ocean currents considerably influence their movement. To account for variations in the buoyancy of these buoys, three experiments were conducted, each considering different levels of windage. The simulation results closely aligned with the observed coastal distribution patterns of the large EPS debris. As the windage increases, the particles exhibit a swifter deviation from their original locations, highlighting the need for effective local management. Moreover, this increased windage affects the distribution patterns in regional seas, reducing the number of particles that flow into the East Sea, while increasing the number of particles that migrate into the Yellow Sea and East China Sea.

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Analysis of floating debris behaviour in the Nakdong River basin of the southern Korean peninsula using satellite location tracking buoys

Cited by 15 publications

References 23 publications

Major sources and monthly variations in the release of land-derived marine debris from the Greater Jakarta area, Indonesia

Major sources and monthly variations in the release of land-derived marine debris from the Greater Jakarta area, Indonesia

Algal Bloom Monitoring using UAVs Imagery

Distribution and Environmental Impact of Expanded Polystyrene Buoys from Korean Aquaculture Farms

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