Digital Shoreline Analysis System (DSAS) version 5.0 user guide

Himmelstoss, Emily A.; Henderson, Rachel E.; Kratzmann, Meredith G.; Farris, Amy S.

doi:10.3133/ofr20181179

Cited by 329 publications

(282 citation statements)

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“…The present study aims to assess and quantify the main changes along an approximately 1.3 km stretch of shoreline located in Hiorthhamn-on the eastern shore of Adventfjorden, Svalbard, where cultural heritage is under threat from coastal erosion. The DSAS tool [64] is implemented to evaluate the erosion and accretion rate of the coastline over time. The quantification of change is complemented with a detailed geological and geomorphological mapping of the affected and adjacent area that will bring new insights in understanding how different substrata and geomorphological processes interact and are affected by coastal processes in a changing Arctic climate.…”

Section: Number On Mapmentioning

confidence: 99%

Coastal Erosion Affecting Cultural Heritage in Svalbard. A Case Study in Hiorthhamn (Adventfjorden)—An Abandoned Mining Settlement

et al. 2020

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Hiorthhamn is an abandoned Norwegian coal mining settlement with a loading dock and a lot of industrial infrastructure left in the coastal zone. In this study, changes in the position of 1.3 km of the Hiorthhamn shoreline, which affect cultural heritage, is described for a time-period spanning 92 years . The shoreline positions were established based on a map (1927), orthophotos (2009) and a topographic survey with differential Global Positioning System (GPS) (summer 2019). Detailed geomorphological and surface sediment mapping was conducted to form a framework for understanding shoreline-landscape interaction. The shoreline was divided into three sectors to calculate the erosion/stability/accretion rates by using the DSAS (Digital Shoreline Analysis System) extension of ArcGIS. The DSAS analysis showed very high erosion in Sector 1, while Sectors 2 and 3 showed moderate accretion and moderate erosion, respectively. Sector 1 is geologically composed of easily erodible sorted beach sediments and protected remains from the mining industry such as wrecks of heavy machines, loading carts, wagons and rusty tracks that are directly exposed to coastal erosion. The all-sector average shoreline erosion rate (EPR parameter) for the 92 years period was −0.21 m/year. The high shoreline erosion rates in Sector 1, together with the high potential damage to cultural heritage, supports the urgent need of continued coastal monitoring and sustainable management of cultural heritage in Hiorthhamn.Sustainability 2020, 12, 2306 2 of 21 losses in the future. Arctic coastal areas can experience erosion rates similar to, or higher than, those in temperate regions due to the added influence of thawing permafrost and extreme temperatures.Coastal areas located at high latitudes are even more affected by the changes in the environment (e.g., air temperatures, major river discharges and open water season length have increased, and storm tracks and intensities are changing) [6]. The Arctic coastal zone is defined as the region both seaward and landward of the coastlines of the Arctic shelf areas, including all archipelagos and islands [7]. Arctic coastal areas can experience erosion rates similar to or higher than those in temperate regions due to the added influence of thawing permafrost and extreme temperatures, even though the erosional processes are usually still limited to a few months per year [6]. Arctic areas have become important hot spots for studying the effects of a changing climate [8], which is felt earlier there than elsewhere on Earth [9]. The present ongoing research focuses on modelling the velocity of glaciers and ice caps [10], land cover and ice-wedge polygon mapping [11,12], the surface morphology of fans [13], retrogressive thaw slumps triggering [14,15], coastal erosion [16], human impact [17], etc. One of the most exposed Arctic areas is Svalbard, which is experiencing amplified climate change when compared to the global average [18,19]. Svalbard's coastal area is under high pressure from natural [20] and in some area...

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Section: Number On Mapmentioning

confidence: 99%

Coastal Erosion Affecting Cultural Heritage in Svalbard. A Case Study in Hiorthhamn (Adventfjorden)—An Abandoned Mining Settlement

et al. 2020

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“…The errors of the maps as a result of the scale factor were also considered in estimating the rate of the site destruction. To accomplish this task, DSAS (Digital Shoreline Analysis System) software v.5 extension for ArcGIS was used [57]. Different parameters were calculated: Shoreline Change Envelope (SCE, expressed in m), Net Shoreline Movement (NSM, in m) and End Point Rate (EPR, m/yr).…”

Section: Methodsmentioning

confidence: 99%

Pars pro toto—Remote Sensing Data for the Reconstruction of a Rounded Chalcolithic Site from NE Romania: The Case of Ripiceni–Holm Settlement (Cucuteni Culture)

2020

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Prehistoric sites in NE Romania are facing major threats more than ever, both from natural and human-induced hazards. One of the main reasons are the climate change determined natural disasters, but human-induced activities should also not be neglected. The situation is critical for Chalcolithic sites, with a very high density in the region and minimal traces at the surface, that are greatly affected by one or more natural hazards and/or anthropic interventions. The case study, Ripiceni–Holm, belonging to Cucuteni culture, is one of the most important Chalcolithic discoveries in the region. It is also the first evidence from Romania of a concentric arrangement of buildings in the proto-urban mega-sites tradition in Cucuteni-Trypillia cultural complex, and a solid piece of evidence in terms of irreversible natural and anthropic destruction. Using archival cartographic material, alongside non-destructive and high-resolution airborne sensing and ground-based geophysical techniques (LiDAR, total field and vertical gradient magnetometry), we managed to detect diachronic erosion processes for 31 years, to identify a complex internal spatial organization of the actual site and to outline a possible layout of the initial extent of the settlement. The erosion was determined with the help of the DSAS tool and highlighted an average erosion rate of 0.96 m/year. The main results argue a high percent of site destruction (approximately 45%) and the presence of an active shoreline affecting the integrity of the cultural layer.

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“…O DSAS é uma extensão do software ArcGIS que quantifica e analisa a evolução do processo de erosão ou deposição costeira (Figura 4). O método consiste na geração de transectos ao longo da linha de costa, calculando taxas anuais de variação expressas de acordo com diferentes métodos estatísticos de análise (Himmelstoss et al, 2018). O método foi aplicado por Farias e Maia (2010) em vários segmentos do litoral do Ceará, identificando modificações na linha de costa e taxas de erosão e progradação associadas.…”

Section: Aquisição De Dadosunclassified

“…Representação dos dados necessários para calcular a variação temporal da linha de costa no DSAS (adaptado deHimmelstoss et al, 2018).…”

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Caracterização dos setores erosivos e deposicionais da linha de costa de Icapuí (CE) com base em produtos de sensoriamento remoto e técnicas de geoprocessamento

Neto

Duarte

Souto

et al. 2020

Rev. Bras. Geog. Fis.

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A importância das zonas costeiras implica na necessidade de contínuos estudos relacionados ao monitoramento de seus processos. Neste contexto, a linha de costa representa uma das feições mais dinâmicas, e sua variabilidade é um indicador da erosão ou deposição costeira. A fim de avaliar as tendências de mudança da linha de costa do município de Icapuí, localizado no extremo leste do estado do Ceará, este trabalho envolveu a utilização de imagens orbitais do satélite Landsat, compondo uma série temporal de 30 anos com intervalos de cinco anos entre cada cena. Foram aplicados o Método de Mudança do Polígono e o Digital Shoreline Analysis System (DSAS) na caracterização da linha de costa, quantificando suas taxas de variação e balanço sedimentar em área. A área total foi setorizada em quatro porções, utilizando a morfologia costeira como critério de segmentação. Os resultados indicaram a existência de três hotspots de erosão e deposição, relacionados à desembocadura do riacho Arrombado, no setor leste; à desembocadura do estuário Barra Grande, que separa os setores centrais leste e oeste; e ao promontório de Ponta Grossa, que condiciona uma inflexão da linha de costa no setor oeste. Cada um destes setores apresenta dinâmica de deposição a barlamar e erosão a sotamar, com destaque para os processos acentuados de retrogradação entre as praias de Barreiras de Baixo e Barrinhas, no setor central oeste, e a forte dinâmica deposicional da praia de Ponta Grossa, no setor oeste. Identification of the erosive and depositional sectors of the Icapuí (CE) shoreline based on remote sensing products and geoprocessing techniques A B S T R A C TThe importance of coastal zones implies the need for continuous studies related to the monitoring of their processes. In this context, the shoreline represents one of the most dynamic features, and its variability is an indicator of erosion or coastal deposition. In order to evaluate the changing trends of the coast of the Icapuí city, located in the far east of the state of Ceará, this work involved the use of Landsat satellite orbital images, composing a 30-year time series with five-year intervals between each scene. The Polygon Change Method and the Digital Shoreline Analysis System (DSAS) were applied to characterize the shoreline, quantifying its variation rates and sedimentary balance in area. The total area was divided into four portions, using coastal morphology as a segmentation criterion. The results indicated the existence of three erosion and deposition hotspots, related to the Arrombado stream inlet, in the eastern sector; the Barra Grande estuary inlet, which separates the central east and west sectors; and the Ponta Grossa promontory, which conditions a shoreline inflection in the western sector. Each of these sectors has a deposition dynamic to updrift and erosion to downdrift, with prominence to the accentuated processes of retrogradation between the Barreiras de Baixo and Barrinhas beaches, in the central west sector, and the strong depositional dynamics of Ponta Grossa beach, in the west sector.Keywords: coastal erosion; shoreline change; temporal analysis.

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Digital Shoreline Analysis System (DSAS) version 5.0 user guide

Cited by 329 publications

References 0 publications

Coastal Erosion Affecting Cultural Heritage in Svalbard. A Case Study in Hiorthhamn (Adventfjorden)—An Abandoned Mining Settlement

Coastal Erosion Affecting Cultural Heritage in Svalbard. A Case Study in Hiorthhamn (Adventfjorden)—An Abandoned Mining Settlement

Pars pro toto—Remote Sensing Data for the Reconstruction of a Rounded Chalcolithic Site from NE Romania: The Case of Ripiceni–Holm Settlement (Cucuteni Culture)

Caracterização dos setores erosivos e deposicionais da linha de costa de Icapuí (CE) com base em produtos de sensoriamento remoto e técnicas de geoprocessamento

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