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Earth Observation of Study on Coastal Geomorphic Evolution
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Earth Observation of Study on Coastal Geomorphic Evolution

A special issue of Remote Sensing (ISSN 2072-4292). This special issue belongs to the section "Remote Sensing in Geology, Geomorphology and Hydrology".

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 8586

Special Issue Editor

Prof. Dr. Stanislav Ogorodov

E-Mail Website
Guest Editor
Laboratory of Geoecology of the North, Faculty of Geography, Lomonosov Moscow State University, Moscow, Russia
Interests: geomorphology; physical geography; marine environment; coastal processes; sediment transport; sea ice and waves; cartography; remote sensing

Special Issue Information

Dear Colleagues,

Coastal landscapes all around the world are highly sensitive to global climate changes and local human impact. Sea level rise, increases in storm surge frequency and height, disturbance of sediment fluxes in coastal zones, beach and offshore sediment excavation, dredging, construction of port facilities, and shore protection are provoking activation of coastal processes leading to enhanced retreat of some sections of the coast and the progradation of others.

Particularly noticeable environmental changes are taking place in the Arctic. As a result, the decrease in sea ice cover is accelerating with simultaneous melting of the permafrost. A longer dynamically active ice-free period, increased wave fetch, and water temperature rise have led to intensification of the wave and thermal impact on the coast. As a result, in areas previously subject to erosion, the average annual rate of coastline retreat has doubled, or even more, compared with the end of the 20th century. Erosion processes have also begun on significant stretches of coastline that were previously in a stable state.

Remote sensing technology contributes substantially to coastal geomorphological studies, providing a basis for any general geomorphological survey and affording reconstruction of coastline evolution. Remote sensing, coupled with field data on geological structure of the coast and hydrometeorological data, provide all the necessary data for interpretation and predicting the further evolution of the coast.

In the last few decades, besides interpretation of classical optical satellite images, synthetic aperture radar (SAR) technologies have become widely used, for example in sea ice survey. LiDAR laser scanning from research vessels and UAV technologies allow us to study the morphology and dynamics of coasts in detail and on a local scale. Multibeam echo sounders and side-scan sonars provide data on the topography of the nearshore sea bottom, which is necessary for obtaining a comprehensive view of coastal zone statement and evolution.

The Special Issue aims to discuss global climate changes and local human impacts on coastal geomorphic evolution over time and their spatial basis as determined using modern remote sensing technologies.

Prof. Dr. Stanislav Ogorodov
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Remote Sensing is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • seacoasts
  • environmental forcing change
  • human impact
  • multiyear aero and space images
  • coastal and offshore topography mapping
  • UAV techniques
  • coastal geomorphic evolution
  • coastal erosion
  • arctic coastal dynamics
  • sea ice effects on coast
  • erosion of permafrost coasts

Published Papers (4 papers)

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Research

28 pages, 29670 KiB  
Article
Coastal Dynamics at Kharasavey Key Site, Kara Sea, Based on Remote Sensing Data
by Georgii Kazhukalo, Anna Novikova, Natalya Shabanova, Mikhail Drugov, Stanislav Myslenkov, Pavel Shabanov, Nataliya Belova and Stanislav Ogorodov
Remote Sens. 2023, 15(17), 4199; https://doi.org/10.3390/rs15174199 - 26 Aug 2023
Cited by 1 | Viewed by 972
Abstract
In recent decades, acceleration of coastal erosion has been observed at many key sites of the Arctic region. Coastal dynamics of both erosional and accretional stretches at Kharasavey, Kara Sea, was studied using multi-temporal remote sensing data covering the period from 1964 to [...] Read more.
In recent decades, acceleration of coastal erosion has been observed at many key sites of the Arctic region. Coastal dynamics of both erosional and accretional stretches at Kharasavey, Kara Sea, was studied using multi-temporal remote sensing data covering the period from 1964 to 2022. Cross-proxy analyses of the interplay between coastal dynamics and regional (wave and thermal action) and local (geomorphic and lithological features; technogenic impact) drivers were supported by cluster analysis and wind–wave modelling via the Popov–Sovershaev method and WaveWatch III. Ice-rich permafrost bluffs and accretional sandy beaches exhibited a tendency towards persistent erosion (−1.03 m/yr and −0.42 m/yr, respectively). Shoreline progradation occurred locally near Cape Burunniy (6% of the accretional stretch) and may be due to sediment flux reversals responding to sea-ice decline. Although the mean rates of erosion were decreasing at a decadal scale, cluster analysis captured a slight increase in the retreat for 71% of the erosional stretch, which is apparently related to the forcing of wind–wave and thermal energy. Erosional hotspots (up to −7.9 m/yr) occurred mainly in the alignment of Cape Kharasavey and were predominantly caused by direct human impact. The presented study highlights the non-linear interaction of the Arctic coastal change and environmental drivers that require further upscaling of the applied models and remote sensing data. Full article
(This article belongs to the Special Issue Earth Observation of Study on Coastal Geomorphic Evolution)
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19 pages, 23340 KiB  
Article
UAV Photogrammetry in Intertidal Mudflats: Accuracy, Efficiency, and Potential for Integration with Satellite Imagery
by Chunpeng Chen, Bo Tian, Wenting Wu, Yuanqiang Duan, Yunxuan Zhou and Ce Zhang
Remote Sens. 2023, 15(7), 1814; https://doi.org/10.3390/rs15071814 - 29 Mar 2023
Cited by 7 | Viewed by 2162
Abstract
The rapid, up-to-date, cost-effective acquisition and tracking of intertidal topography are the fundamental basis for timely, high-priority protection and restoration of the intertidal zone. The low cost, ease of use, and flexible UAV-based photogrammetry have revolutionized the monitoring of intertidal zones. However, the [...] Read more.
The rapid, up-to-date, cost-effective acquisition and tracking of intertidal topography are the fundamental basis for timely, high-priority protection and restoration of the intertidal zone. The low cost, ease of use, and flexible UAV-based photogrammetry have revolutionized the monitoring of intertidal zones. However, the capability of the RTK-assisted UAV photogrammetry without ground control points, the impact of flight configuration difference, the presence of surface water in low-lying intertidal areas on the photogrammetric accuracy, and the potential of UAV/satellite Synergy remain unknown. In this paper, we used an RTK-assisted UAV to assess the impact of the above-mentioned considerations quantitatively on photogrammetric results in the context of annual monitoring of the Chongming Dongtan Nature Reserve, China based on an optimal flight combination. The results suggested that (1) RTK-assisted UAVs can obtain high-accuracy topographic data with a vertical RMSE of 3.1 cm, without the need for ground control points. (2) The effect of flight altitude on topographic accuracy was most significant and also nonlinear. (3) The elevation obtained by UAV photogrammetry was overestimated by approximately 2.4 cm in the low-lying water-bearing regions. (4) The integration of UAV and satellite observations can increase the accuracy of satellite-based waterline methods by 51%. These quantitative results not only provide scientific insights and guidelines for the balance between accuracy and efficiency in utilizing UAV-based intertidal monitoring, but also demonstrate the great potential of combined UAV and satellite observations in identifying coastal erosion hotspots. This establishes high-priority protection mechanisms and promotes coastal restoration. Full article
(This article belongs to the Special Issue Earth Observation of Study on Coastal Geomorphic Evolution)
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16 pages, 8000 KiB  
Article
Spatial and Temporal Evolution Characteristics of the Salween River Delta from 1973 to 2021
by Aoyang He, Jiangcheng Huang, Zhengbao Sun, Jingyi Zhou and Cheng Yang
Remote Sens. 2023, 15(5), 1467; https://doi.org/10.3390/rs15051467 - 06 Mar 2023
Cited by 2 | Viewed by 3075
Abstract
We obtained sixteen clear-sky remote sensing images of Landsat series data from 1973 to 2021 and extracted continental and island coastlines of the Salween River Delta based on the Modified Normalized Difference Water Index (MNDWI) and visual interpretation correction. We determined the overall [...] Read more.
We obtained sixteen clear-sky remote sensing images of Landsat series data from 1973 to 2021 and extracted continental and island coastlines of the Salween River Delta based on the Modified Normalized Difference Water Index (MNDWI) and visual interpretation correction. We determined the overall evolution of coastlines with statistical and superposition analysis and applied the Digital Shoreline Analysis System (DSAS) to summarize the spatial and temporal evolution process and characteristics in the past 50 years. Experimental results show that (1) the overall change of the coastline was more rapid on the island than on the continent, and on the Indian Ocean side than on the continental side, (2) the total area of the island increased by 91.16 km2 from 1973 to 2021, the area of Bilu Island increased by 50.38 km2, the length of the continental coastline decreased by 0.39 km, and the length of the coastline of the Bilu Island increased by 6.43 km, (3) the Linear Regression Rate (LRR) were: 4.69 m/yr for the total coastline, 1.06 and −2.07 m/yr, respectively, for the western and southern branches of the continental coastline, and 0.83 and 21.52 m/yr, respectively, for the continental and Indian Ocean sides of Bilu Island, and (4) the dominant process in the Salween River Delta was accretion, with an overall accretion area of about 10 km2, and an unstable accretion rate. Full article
(This article belongs to the Special Issue Earth Observation of Study on Coastal Geomorphic Evolution)
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19 pages, 9299 KiB  
Article
Dynamics of Low-Lying Sandy Coast of the Gydan Peninsula, Kara Sea, Russia, Based on Multi-Temporal Remote Sensing Data
by Nataliya Belova, Alexander Ermolov, Anna Novikova, Stanislav Ogorodov and Yulia Stanilovskaya
Remote Sens. 2023, 15(1), 48; https://doi.org/10.3390/rs15010048 - 22 Dec 2022
Cited by 3 | Viewed by 1486
Abstract
The retreat rates of Arctic coasts have increased in recent decades at many sites, and an essential part of coasts considered accumulative before have turned erosional due to global climate changes and construction in the coastal zone. In this paper, we study a [...] Read more.
The retreat rates of Arctic coasts have increased in recent decades at many sites, and an essential part of coasts considered accumulative before have turned erosional due to global climate changes and construction in the coastal zone. In this paper, we study a 7 km long coastal section of the western Gydan Peninsula in a new construction area. Based on the interpretation of multi-temporal satellite imagery, we assessed coastal dynamics in distinct periods from 1972 to 2020. We analyzed the geological structure of the coast as well as changes in hydrometeorological parameters with time, and considering the human impact, we proposed the main drivers of spatial and temporal variations of coastal dynamics. The studied low-lying sandy accumulative marine terrace was more or less stable in the period before construction (1972–2014). However, with the area’s development, the coast dynamics changed drastically: in 2014–2017, three-quarters of the studied area experienced retreat, and the average retreat rate amounted to 5.8 m/yr, up to 28.5 m/yr near the construction sites. We relate this coastal erosion intensification to human impact combined with the growth of hydrometeorological forcing. Although coastal erosion slowed down after 2017, the retreat trend remained. In the coming years, with Arctic climate warming, erosion of the studied coast will continue. Full article
(This article belongs to the Special Issue Earth Observation of Study on Coastal Geomorphic Evolution)
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