Netherlands Journal of Geosciences最新文献

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A distant traveller: a Late Jurassic nerineoid gastropod (Mollusca, Heterobranchia) on the Maasvlakte 2 beach, the Netherlands 遥远的旅行者:荷兰 Maasvlakte 2 号海滩上的晚侏罗世海龙类腹足动物(软体动物,异鳃纲
Netherlands Journal of Geosciences Pub Date : 2024-04-24 DOI: 10.1017/njg.2024.8
Jelle W.F. Reumer, Anders Schinkel
{"title":"A distant traveller: a Late Jurassic nerineoid gastropod (Mollusca, Heterobranchia) on the Maasvlakte 2 beach, the Netherlands","authors":"Jelle W.F. Reumer, Anders Schinkel","doi":"10.1017/njg.2024.8","DOIUrl":"https://doi.org/10.1017/njg.2024.8","url":null,"abstract":"A fragmentary nerineoid gastropod collected from the Maasvlakte 2 beach may be identified as <jats:italic>Ptygmatis</jats:italic> cf. <jats:italic>bruntrutana</jats:italic> (Thurmann, 1832). Probably originating from Upper Jurassic strata in north-eastern France, it must have been transported here by a forerunner of the River Meuse (Maas).","PeriodicalId":501577,"journal":{"name":"Netherlands Journal of Geosciences","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140804571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A plesiosaurian autopodial element (Plesiosauria indet.) with remarkable articular subchondral surfaces from the Maastrichtian type area (south-east Netherlands) 来自马斯特里赫特类型区(荷兰东南部)的一个具有显著关节软骨下表面的长颈龙类自足器(Plesiosauria indet.)
Netherlands Journal of Geosciences Pub Date : 2024-04-18 DOI: 10.1017/njg.2024.4
Lars P.J. Barten, Eric W.A. Mulder, John W.M. Jagt
{"title":"A plesiosaurian autopodial element (Plesiosauria indet.) with remarkable articular subchondral surfaces from the Maastrichtian type area (south-east Netherlands)","authors":"Lars P.J. Barten, Eric W.A. Mulder, John W.M. Jagt","doi":"10.1017/njg.2024.4","DOIUrl":"https://doi.org/10.1017/njg.2024.4","url":null,"abstract":"<p>The first isolated and well-preserved phalanx (autopodial element) of a generically and specifically indeterminate (probably xenopsarian) plesiosaur from the Maastrichtian type area (south-east Netherlands) is described and illustrated. Morphological features of this bone, such as the articular subchondral surfaces, allow it to be distinguished from phalanges of co-occurring mosasaurs (Mosasauridae, Squamata) and could imply rapid growth in plesiosaurs, similar to that observed in extant leatherback turtles. The large size of the phalanx indicates that it originates either from a large juvenile or from a paedomorphic individual. The paucity of plesiosaur remains in biocalcarenites of late Maastrichtian age in the Maastrichtian type area could be explained by the shallow settings, in which these strata were deposited, which may not have offered suitable ecological resources conducive to abundant plesiosaur inhabitation. Presumably, the lack of steep continental slopes in the type Maastrichtian, at which oceanic upwelling of cold, nutrient-rich water supported a higher prey density for pelagic predators such as plesiosaurs, may have inhibited plesiosaur occupation. Rather, decomposing floating carcasses may have been the source of dissociated elements of plesiosaurs in this area, such as isolated teeth, vertebrae and the autopodial element described here.</p>","PeriodicalId":501577,"journal":{"name":"Netherlands Journal of Geosciences","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140614552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A proposal for an updated and revised stratigraphical framework of the Miocene in the Achterhoek (eastern Netherlands) 关于更新和修订阿赫特霍克(荷兰东部)中新世地层框架的建议
Netherlands Journal of Geosciences Pub Date : 2024-04-01 DOI: 10.1017/njg.2024.3
Dirk K. Munsterman, Maarten Van den Bosch, Frank P. Wesselingh, Marian Helwerda, Freek S. Busschers
{"title":"A proposal for an updated and revised stratigraphical framework of the Miocene in the Achterhoek (eastern Netherlands)","authors":"Dirk K. Munsterman, Maarten Van den Bosch, Frank P. Wesselingh, Marian Helwerda, Freek S. Busschers","doi":"10.1017/njg.2024.3","DOIUrl":"https://doi.org/10.1017/njg.2024.3","url":null,"abstract":"<p>The comprehensive overview of Neogene lithostratigraphy in the eastern Netherlands dates back to the mid-1970s. In the present study, continuous gamma-ray logs and <span>in situ</span> sediment core samples from six boreholes in the area allowed palynological and mollusc analyses and wireline log-based correlation. These investigations were aimed at updating and revising the existing Neogene lithostratigraphy within the Stratigraphic Nomenclature of the Netherlands by integrating litho-, bio-, and sequence-stratigraphic approaches. The analytical results yielded the establishment of new holo- and lectostratotype sections, together with cross-border interregional correlation. The lithostratigraphic revision resulted in the modified definition of the Aalten, Eibergen and Delden members and the definition of two new proposed members: the Dale and Doetinchem members. The Ticheloven bed, removed in earlier studies, is proposed to be reinstated, and the Stemerdink Bed is upgraded in its hierarchical status to the Stemerdink member. All lithostratigraphic units are included in the present Miocene subdivision of the Groote Heide and Diessen formations, which include three recognisable unconformities: the Early-Miocene Unconformity (EMU), Mid-Miocene Unconformity (MMU) and Late-Miocene Unconformity (LMU). The new, revised, reintroduced and existing local lithostratigraphic units and sequences are discussed with their counterparts in the south and southeast of the Netherlands, in Germany and Belgium, and from this a regionally consistent framework has emerged of the regional Neogene lithostratigraphy.</p>","PeriodicalId":501577,"journal":{"name":"Netherlands Journal of Geosciences","volume":"111 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140568609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Scaphitid ammonites from the lower Maastrichtian of Nahoryany (western Ukraine) and discussion on the origin of Hoploscaphites constrictus 来自纳霍里亚尼(乌克兰西部)下元古代的Scaphitid氨形石以及关于Hoploscaphites constrictus起源的讨论
Netherlands Journal of Geosciences Pub Date : 2024-03-22 DOI: 10.1017/njg.2024.2
Marcin Machalski
{"title":"Scaphitid ammonites from the lower Maastrichtian of Nahoryany (western Ukraine) and discussion on the origin of Hoploscaphites constrictus","authors":"Marcin Machalski","doi":"10.1017/njg.2024.2","DOIUrl":"https://doi.org/10.1017/njg.2024.2","url":null,"abstract":"The lower Maastrichtian (Upper Cretaceous) section at Nahoryany, south of Lviv (western Ukraine), has been known as a rich source of fossils since 1843. However, the section is not available since a long time ago and fossils collected from it can only be studied in museum collections. In the present paper, ammonites of the scaphitid genus <jats:italic>Hoploscaphites</jats:italic> are studied based on Nahoryany material, comprising <jats:italic>Hoploscaphites pumilus</jats:italic>, <jats:italic>H. constrictus</jats:italic> and <jats:italic>H.</jats:italic> sp. Specimens from Nahoryany in museum collections lack data on their provenance level within the section so it cannot be determined whether or not they occurred together or formed a succession; data on inoceramid bivalves indicate the presence of two successive zones at Nahoryany. Some specimens from Nahoryany here referred to as <jats:italic>H. pumilus</jats:italic> are similar to the controversial <jats:italic>H. constrictus anterior</jats:italic> from the lower Maastrichtian of Poland. This morphology suggests an ancestor–descendant relationship between <jats:italic>H</jats:italic>. <jats:italic>pumilus</jats:italic> and <jats:italic>H</jats:italic>. <jats:italic>constrictus</jats:italic>, a common species once considered as an informal index for the Boreal Maastrichtian in Europe. The inferred evolutionary transition from <jats:italic>H</jats:italic>. <jats:italic>pumilus</jats:italic> to <jats:italic>H</jats:italic>. <jats:italic>constrictus</jats:italic> was towards a less robust, recoiled shell, which would have enhanced the horizontal swimming ability and manoeuvrability of these cephalopods. Recoiling trends occurred in several lineages of Late Cretaceous scaphitids.","PeriodicalId":501577,"journal":{"name":"Netherlands Journal of Geosciences","volume":"143 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140202144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The diversity of teleost fishes during the terminal Cretaceous and the consequences of the K/Pg boundary extinction event 白垩纪末期跃层鱼类的多样性和K/Pg边界大灭绝事件的后果
Netherlands Journal of Geosciences Pub Date : 2024-03-04 DOI: 10.1017/njg.2024.1
Werner W. Schwarzhans, Giorgio Carnevale, Gary L. Stringer
{"title":"The diversity of teleost fishes during the terminal Cretaceous and the consequences of the K/Pg boundary extinction event","authors":"Werner W. Schwarzhans, Giorgio Carnevale, Gary L. Stringer","doi":"10.1017/njg.2024.1","DOIUrl":"https://doi.org/10.1017/njg.2024.1","url":null,"abstract":"<p>The Late Cretaceous was a time of blossoming teleost diversification that came to a sudden restriction and partial termination during the extinction event at the Cretaceous–Paleogene (K/Pg) boundary. Among the dominant and diverse Late Cretaceous teleost groups prior to the K/Pg boundary event were certain pelagic Aulopiformes (e.g., Ichthyotringoidei and Enchodontoidei) and a large variety of basal Acanthomorpha whose relationships are difficult to determine. The skeletal record diminishes during the late Campanian and is low in the Maastrichtian and Paleocene, constituting the so-called ‘Patterson’s Gap’. Recent studies of fossil otoliths, however, have significantly increased the number of taxa recognised for this time inerval, but most of the putative extinct forms lack adequate calibration with otoliths found <span>in situ</span> in articulated skeletons. However, the otolith assemblages do confirm the presence of great morphological diversity among Aulopiformes and Acanthomorpha <span>incertae sedis</span> that became extinct at the K/Pg boundary. In the present review, we elucidate the effect of the K/Pg boundary from an otolith perspective and categorise extinct lineages and survivors. It is interesting to recognise that several of the surviving lineages are represented by groups that probably originated during the Late Cretaceous but were not particularly common up to the K/Pg boundary and began to expand rapidly and diversify during the early Paleogene. Such lineages probably took advantage to populate void ecospace that may have opened following the extirpation of previously dominant lineages. During the early Paleogene, the otolith record shows that the Ophidiiformes and perciforms s. lat. were the ones that diversified the most rapidly and became the most abundant, and in certain areas associated with the Gadiformes.</p>","PeriodicalId":501577,"journal":{"name":"Netherlands Journal of Geosciences","volume":"129 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140025622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New radiocarbon age constraints on the eruption history of the Quill volcano, St. Eustatius, Dutch Caribbean 荷属加勒比圣尤斯特歇斯基尔火山喷发史的新放射性碳年代限制因素
Netherlands Journal of Geosciences Pub Date : 2024-02-28 DOI: 10.1017/njg.2023.14
Pieter Z. Vroon, Hobie M. van Zadelhoff, Bert van der Valk, Michiel J. van der Meulen, Gareth R. Davies
{"title":"New radiocarbon age constraints on the eruption history of the Quill volcano, St. Eustatius, Dutch Caribbean","authors":"Pieter Z. Vroon, Hobie M. van Zadelhoff, Bert van der Valk, Michiel J. van der Meulen, Gareth R. Davies","doi":"10.1017/njg.2023.14","DOIUrl":"https://doi.org/10.1017/njg.2023.14","url":null,"abstract":"The late Pleistocene to Holocene subaerial pyroclastic deposits of the Quill stratovolcano on the Caribbean island of St Eustatius form seven stratigraphic divisions. New radiocarbon ages of charcoal are presented for the second, third and seventh divisions in order to better constrain the Quill’s eruption history. Three samples from the same layer of Division 2 at two localities on the northeast coast yield ages of 18,020 ± 40 (1σ), 18,310 ± 45 and 18,490 ± 45 <jats:sup>14</jats:sup>C yr BP (∼19,800–20,600 yr cal BC). These are considerably younger (∼4400 yr) than a previously published result for this division. A single sample of Division 3 gave an age of 8090 <jats:sup>14</jats:sup>C yr BP (∼7100 yr cal BC) and overlaps with previously published <jats:sup>14</jats:sup>C ages for this division. A charred root in the pyroclastic unit deposited by the last eruption of the Quill (Division 7) gave an age of 919 <jats:sup>14</jats:sup>C yr BP (∼1100–1200 yr cal AD). This result is ∼600 years younger than a previously published age, and its origin is attributed to human activity. The timing of the last eruption of the Quill therefore remains poorly constrained but is older than 600 AD. Terrestrial gastropods found in paleosols and organic material found in small streams that developed in Division 3 indicate that Division 4 must be younger than 6100 ± 500 yr cal BC. The oxygen and carbon isotope composition of the terrestrial gastropods derived from Division 3 paleosols indicates that the C4 and CAM-type vegetation was dominant and that the climate subsequently changed to wetter conditions. The minimum eruption frequency for the Quill volcano is one eruption every ∼1400 years during the past 22,000 years. This eruption frequency of the Quill volcano is of the same order of magnitude as other recent northern Lesser Antilles volcanoes, Soufrière Hills (Montserrat, ∼5000 years) and Mt Liamuiga (St. Kitts, ∼2500 years).","PeriodicalId":501577,"journal":{"name":"Netherlands Journal of Geosciences","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140005345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The brachiopod assemblage from the Maastrichtian white chalk at Chełm, eastern Poland: stratigraphical and palaeoecological implications 波兰东部切乌姆马斯特里赫特白垩纪腕足类群:地层学和古生态学意义
Netherlands Journal of Geosciences Pub Date : 2024-02-06 DOI: 10.1017/njg.2023.15
Marcin Machalski, Maria Aleksandra Bitner
{"title":"The brachiopod assemblage from the Maastrichtian white chalk at Chełm, eastern Poland: stratigraphical and palaeoecological implications","authors":"Marcin Machalski, Maria Aleksandra Bitner","doi":"10.1017/njg.2023.15","DOIUrl":"https://doi.org/10.1017/njg.2023.15","url":null,"abstract":"Brachiopods from the lower upper Maastrichtian (Upper Cretaceous) white chalk succession exposed at Chełm (eastern Poland) comprise <jats:italic>Lingula cretacea</jats:italic>, <jats:italic>Isocrania costata</jats:italic>, <jats:italic>Cryptoporella antiqua</jats:italic>, <jats:italic>Cretirhynchia</jats:italic> sp., <jats:italic>Neoliothyrina</jats:italic> sp., <jats:italic>Carneithyris</jats:italic> sp., <jats:italic>Terebratulina chrysalis</jats:italic>, <jats:italic>T</jats:italic>. <jats:italic>faujasi</jats:italic>, <jats:italic>T</jats:italic>. <jats:italic>longicollis</jats:italic>, <jats:italic>Terebratulina</jats:italic> spp., <jats:italic>Gisilina</jats:italic> sp., <jats:italic>Bronnothyris bronni</jats:italic>, <jats:italic>Magas chitoniformis</jats:italic>, <jats:italic>Leptothyrellopsis polonicus</jats:italic> and ?<jats:italic>Aemula</jats:italic> sp. This assemblage is relatively poor in terms of taxonomic diversity and specimen abundance and is dominated by stratigraphically long-ranging species. It is best comparable to that from the micromorphic brachiopod <jats:italic>Rugia tenuicostata</jats:italic>–<jats:italic>Meonia semiglobularis</jats:italic> Zone as distinguished in the white chalk successions of Denmark and northern Germany, although this zone is usually placed in the upper lower Maastrichtian. The Chełm succession represents a relatively deep-water and ‘benthos-poor’ variety of white chalk deposited in the Boreal Chalk Sea of Europe. The brachiopod assemblage studied is typical of such a habitat, having been controlled largely by the low availability of minute skeletal substrates suitable for brachiopod settlement.","PeriodicalId":501577,"journal":{"name":"Netherlands Journal of Geosciences","volume":"96 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139770562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A nomenclatural note on Mosasaurus hoffmanni (Squamata, Mosasauroidea) 关于霍夫曼蛙龙(有鳞目,蛙龙科)的命名说明
Netherlands Journal of Geosciences Pub Date : 2024-01-30 DOI: 10.1017/njg.2023.13
Anne S. Schulp, Daniëlle Slootjes, John W.M. Jagt, Eric W.A. Mulder, Nathalie Bardet
{"title":"A nomenclatural note on Mosasaurus hoffmanni (Squamata, Mosasauroidea)","authors":"Anne S. Schulp, Daniëlle Slootjes, John W.M. Jagt, Eric W.A. Mulder, Nathalie Bardet","doi":"10.1017/njg.2023.13","DOIUrl":"https://doi.org/10.1017/njg.2023.13","url":null,"abstract":"<p>The historically important mosasaur fossil (known as ‘le grand animal fossile des carrières de Maestricht’) has been known as <span>Mosasaurus hoffmanni</span> for almost two centuries now. Recently, it has been proposed to amend the spelling of the species name, by adding a second ‘i’ to the species epithet. We present historical evidence to the contrary, and recommend, following article 33.2.3.1 of the ICZN, to retain the specific epithet <span>hoffmanni</span>.</p>","PeriodicalId":501577,"journal":{"name":"Netherlands Journal of Geosciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139586385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermo-hydro-mechanical simulation of cooling-induced fault reactivation in Dutch geothermal reservoirs 荷兰地热储层冷却诱发断层再活化的热-水-机械模拟
Netherlands Journal of Geosciences Pub Date : 2024-01-30 DOI: 10.1017/njg.2023.12
Bakul Mathur, Hannes Hofmann, Mauro Cacace, Gergő András Hutka, Arno Zang
{"title":"Thermo-hydro-mechanical simulation of cooling-induced fault reactivation in Dutch geothermal reservoirs","authors":"Bakul Mathur, Hannes Hofmann, Mauro Cacace, Gergő András Hutka, Arno Zang","doi":"10.1017/njg.2023.12","DOIUrl":"https://doi.org/10.1017/njg.2023.12","url":null,"abstract":"<p>Geothermal energy is one of the most viable sources of renewable heat. However, the potential risk of induced seismicity associated with geothermal operations may slow down the growth of the geothermal sector. Previous research has led to significant progress in understanding fluid-injection-induced seismicity in geothermal reservoirs. However, an in-depth assessment of thermal effects on the seismic risk was generally considered to be of secondary importance. This study aims to investigate the relative influence of temperature and key geological and operational parameters on the slip tendency of pre-existing faults. This is done through coupled thermo-hydro-mechanical simulations of the injection and production processes in synthetic geothermal reservoir models of the most utilized and potentially exploitable Dutch geothermal reservoir formations: Slochteren sandstone, Delft sandstone and Dinantian limestone.</p><p>In our study, changes in the slip tendency of a fault can largely be attributed to thermo-elastic effects, which confirms the findings of recent studies linking thermal stresses to induced seismicity. While the direct pore pressure effect on slip tendency tends to dominate over the early phase of the operations, once pore pressure equilibrium is established in a doublet system, it is the additional stress change associated with the growing cold-water front around the injection well that has the greatest influence. Therefore, the most significant increase in the slip tendency was observed when this low-temperature front reached the fault zone. The distance between an injection well and a pre-existing fault thus plays a pivotal role in determining the mechanical stability of a fault. A careful selection of a suitable target formation together with an appropriate planning of the operational parameters is also crucial to mitigate the risk of induced seismicity. Besides the well-known relevance of the in situ stress field and local fault geometry, rock-mechanical properties and operation conditions exert a major influence on induced stress changes and therefore on the fault (re)activation potential during geothermal operations.</p>","PeriodicalId":501577,"journal":{"name":"Netherlands Journal of Geosciences","volume":"224 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139586413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Large-scale morphological changes and sediment budget of the Western Scheldt estuary 1955–2020: the impact of large-scale sediment management 1955-2020年西沙尔德河河口大尺度形态变化与泥沙收支:大尺度泥沙管理的影响
Netherlands Journal of Geosciences Pub Date : 2023-11-16 DOI: 10.1017/njg.2023.11
Edwin P. L. Elias, Ad J. F. Van der Spek, Zheng Bing Wang, Jelmer Cleveringa, Claire J. L. Jeuken, Marcel Taal, Jebbe J. Van der Werf
{"title":"Large-scale morphological changes and sediment budget of the Western Scheldt estuary 1955–2020: the impact of large-scale sediment management","authors":"Edwin P. L. Elias, Ad J. F. Van der Spek, Zheng Bing Wang, Jelmer Cleveringa, Claire J. L. Jeuken, Marcel Taal, Jebbe J. Van der Werf","doi":"10.1017/njg.2023.11","DOIUrl":"https://doi.org/10.1017/njg.2023.11","url":null,"abstract":"In the Western Scheldt estuary, like in many estuaries, safe navigation, flood protection, and ecological targets require a balanced and sustainable sediment management. A thorough understanding of the morphodynamic functioning of the estuary and its response to changes in hydrodynamics (natural sediment transport) and large-scale interventions is imperative. This paper presents a detailed overview of over 65 years of morphological changes and a comprehensive sediment budget of the Western Scheldt estuary that is based on analysis of a unique series of frequent bathymetric surveys and historical data on human–sediment interactions of dredging, dredge disposal and sand mining. Solving the sediment budget reveals an annual sediment import of 2.2 million m<jats:sup>3</jats:sup>. The highest sediment imports occurred between 1980–1994 and 2005–2020 (2.9 and 3.7 million m<jats:sup>3</jats:sup>/year). A 1.3 million m<jats:sup>3</jats:sup>/year net export prevailed between 1994 and 2005. Natural variations in the hydrodynamics (e.g., tidal asymmetry and amplification) and sediment transports cannot explain the derived temporal variations in sediment import rates. Anthropogenic activities play a dominant role. Capital dredging of the main navigation channel has led to channel deepening and significantly increased dredge and disposal volumes. Disposal on tidal flats and in the secondary channel leads to a long-term storage of sand and, consequently, a local increase in bed level and a sand deficit in the remainder of the system that results in increased sediment imports. Large-scale disposal in the western part of the estuary can (temporarily) reverse the sediment exchange between the estuary and its mouth area, as observed between 1994 and 2005. Apparently, large-scale anthropogenic reallocation of sediment by dredging and/or disposal as part of navigation channel improvement, sand mining or nourishment essentially influences the morphological development of the Western Scheldt estuary. This reveals responsibilities as well as opportunities of sediment management for the Western Scheldt and similar estuaries worldwide.","PeriodicalId":501577,"journal":{"name":"Netherlands Journal of Geosciences","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138543866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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