Impact of sand extraction from the bottom of the southern Baltic Sea on the relief and sediments of the seabed

Uścinowicz, Szymon; Jegliński, Wojciech; Miotk-Szpiganowicz, Grażyna; Nowak, Jarosław; Pączek, Urszula; Przezdziecki, Piotr; Szefler, Kazimierz; Poręba, Grzegorz

doi:10.5697/oc.56-4.857

Cited by 31 publications

(13 citation statements)

References 4 publications

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“…This hypothesis was tested using their models, but no direct observational evidence has been provided yet to the best of our knowledge. Only an indirect measurement of sand layer movement at a depth of 15–20 m was reported under storm conditions by examining the 137 Cs content (Uścinowicz et al, ).…”

Section: Introductionmentioning

confidence: 99%

Observation of Rapid Seabed Erosion Near Closure Depth During a Storm Period at Hujeong Beach, South Korea

Dae

Jin

Jeong

et al. 2019

Geophysical Research Letters

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We report extraordinary seabed erosion that occurred at a depth of ~8.3 m at Hujeong Beach, South Korea. The seabed was eroded for 0.7 m during a ~2.3‐day period under storm conditions. The maximum significant wave height was ~3.8 m, which was unexpected considering the traditional closure depth concept. Four storm events were recorded within 36 day of the experimental period, but the severe erosion only occurred during the first storm. The erosion started when the nearbed flow velocity rapidly increased to reach its maximum at 0.27 m/s, and it continued until this velocity remained at its maximum. Additional factors responsible for the unanticipated erosion process were the current and wave skewness. The erosion was facilitated when the current direction was actively changing and the magnitude of positive skewness increased during the storm period. These factors are likely to have intensified the nearbed flow turbulence and bed shear stress.

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Section: Introductionmentioning

confidence: 99%

Observation of Rapid Seabed Erosion Near Closure Depth During a Storm Period at Hujeong Beach, South Korea

Dae

Jin

Jeong

et al. 2019

Geophysical Research Letters

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“…Although literature pointing to increased environmental consciousness by some mining companies exists, the link between sustainable development and mining has however remained a controversial issue and largely an under-researched area when it comes to identifying resource management scenarios that are likely to breed beneficial environmental outcomes in the small-scale mining sector (Lambert 2001; Warhurst 2001). The main area of concern has been how to regulate and provide guidelines and procedures to mitigate the potential environmental damage from these activities (Trop 2017; UNEP 2014; Uscinowicz et al 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Most sand mining impacts are associated with the removal of substratum material, alteration of the bottom topography, sediment composition, changes in depth and current strength, and the modification of hydrologic conditions (Allsopp et al 2013; Uscinowicz et al 2014). Rapid removal of sand reduces groundwater recharge and may result in premature failure of irrigation wells and associated problems in farming.…”

Section: Introductionmentioning

confidence: 99%

Regulatory and policy implications of sand mining along shallow waters of Njelele River in South Africa

Gondo

Mathada

Amponsah-Dacosta

2019

Jàmbá Journal of Disaster Risk Studies

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The ever-increasing interest in mining of sand in shallow waters of many rural rivers on the one hand and the growing concern for the environment on the other underscore the need to develop better management policies that govern sand extraction. Although literature pointing to increased environmental consciousness by some mining operations exists, the link between environmental concerns and sand mining has however remained a controversial matter and an under-researched area in South Africa. Consequently, decisions relating to what actions should or should not be taken to limit environmental concerns associated with sand mining operations in South Africa are not known. This analysis sought to explore regulatory and policy implications of sand mining operations along a sample of sites of Njelele River in South Africa. Data were gathered through observation, household questionnaire survey and a series of Participatory Rural Appraisal (PRA) exercises conducted with selected community members and sand miners. We used a combination of K -means clustering and Discriminant Function Analysis (DFA) to determine the major environmental attributes explaining the state of affairs in sand mining. Regulatory and policy implications were developed using a combination of Gap analysis; Strengths, Weaknesses, Opportunities and Threats (SWOT) analysis; and the development of a Threats, Opportunities, Weaknesses and Strengths (TOWS) matrix strategy. Our analysis identified a series of morphological, ecological, socio-ecological, governance and physical factors that were major areas of concern in three distinct clusters of sand mining sites. We concluded by discussing a number of regulatory and policy implications of sand mining at three scales, namely strategic, institutional and operational scales.

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“…In general, seafloor substrate data can be used to better manage certain anthropogenic activities, such as underwater constructions, sand extraction and aquaculture, to assess habitat suitability, to develop guidelines or frameworks for monitoring environmental impact and to plan future geological surveys [28,[32][33][34][35]. Information on seabed substrates is particularly valuable for marine habitat mapping and marine spatial planning, as seen in the application examples below.…”

Section: Applicationsmentioning

confidence: 99%

Picking Up the Pieces—Harmonising and Collating Seabed Substrate Data for European Maritime Areas

et al. 2019

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The poor access to data on the marine environment is a handicap to government decision-making, a barrier to scientific understanding and an obstacle to economic growth. In this light, the European Commission initiated the European Marine Observation and Data Network (EMODnet) in 2009 to assemble and disseminate hitherto dispersed marine data. In the ten years since then, EMODnet has become a key producer of publicly available, harmonised datasets covering broad areas. This paper describes the methodologies applied in EMODnet Geology project to produce fully populated GIS layers of seabed substrate distribution for the European marine areas. We describe steps involved in translating national seabed substrate data, conforming to various standards, into a uniform EMODnet substrate classification scheme (i.e., the Folk sediment classification). Rock and boulders form an additional substrate class. Seabed substrate data products at scales of 1:250,000 and 1:1 million, compiled using descriptions and analyses of seabed samples as well as interpreted acoustic images, cover about 20% and 65% of the European maritime areas, respectively. A simple confidence assessment, based on sample and acoustic coverage, is helpful in identifying data gaps. The harmonised seabed substrate maps are particularly useful in supraregional, transnational and pan-European marine spatial planning.

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Impact of sand extraction from the bottom of the southern Baltic Sea on the relief and sediments of the seabed

Cited by 31 publications

References 4 publications

Observation of Rapid Seabed Erosion Near Closure Depth During a Storm Period at Hujeong Beach, South Korea

Observation of Rapid Seabed Erosion Near Closure Depth During a Storm Period at Hujeong Beach, South Korea

Regulatory and policy implications of sand mining along shallow waters of Njelele River in South Africa

Picking Up the Pieces—Harmonising and Collating Seabed Substrate Data for European Maritime Areas

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