remotesensing-logo

Journal Browser

Journal Browser

Advances of Remote Sensing for Topographic Monitoring of Coastal Areas

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 December 2021) | Viewed by 14401

Special Issue Editor

Science Faculty, University of Porto, Rua Campo Alegre, 4169-007 Porto, Portugal
Interests: drone photogrammetry; camera calibration; coastal monitoring

Special Issue Information

Dear Colleagues,

Coastal areas, which are very important for economic and ecological reasons, are continuously changed by natural processes and human intervention, leading to alterations in natural processes and, frequently, disastrous consequences. Detailed and frequent topographic mapping surveys are recognized as fundamental for the quantification of such changes to gain better knowledge of natural processes, and to support decision making.

Remote sensing methods, essentially those based on photogrammetry, are the most for these surveys. Developments in sensors and in processing methodologies are continuously occurring, allowing increases in accuracy and reductions in data acquisition costs. For example, drones now allow easy and fast image collection in order to produce accurate and detailed 3D models of beaches, dunes, and cliffs. Automatic computer vision processing methods are now completely integrated into photogrammetric workflows and produce data with very high resolution and detail. The use of precise Global Navigation Satellite System (GNSS) positioning on drones allows for a significant reduction in ground control data, decreasing the time and costs of field work. The same methodologies are applied to imagery traditionally acquired by conventional digital photogrammetric cameras operated in planes, allowing for the acquisition of much wider areas of view with only a minor loss of resolution. The incorporation of multi or hyper spectral cameras can provide richer information in terms of land cover knowledge, complementing the 3D data of the topographic component.

Light Detection and Ranging (LiDAR) sensors are another widely used remote sensing technique for the topographic monitoring of coastal areas. They were traditionally operated in planes but are now commonly used in drones. LiDAR can extend the surveyed areas to shallow waters by using lasers with the capability of water penetration, resulting in topo-bathymetric surveys.

Satellite remote sensing can also play roles in assessing coastline change and by providing three-dimensional images through the use of very high resolution optical sensors. Optical sensors can also be used for the determination of shallow water bathymetry.

In this Special Issue, we welcome studies presenting the most recent advances in the remote sensing methodologies, their feasibility, ease of operation, and accuracy as well as the capability of implementing continuous monitoring programs in coastal areas. Topics to be considered include the following:

  • Aerial and Unmanned Aerial Vehicle (UAV) cameras in coastal topography;
  • Aerial and UAV LiDAR in coastal topography;
  • Camera calibration;
  • Direct georeferencing;
  • Accuracy assessments;
  • Shallow water bathymetry.

Dr. José Alberto Gonçalves
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.

Published Papers (3 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

Jump to: Other

25 pages, 4649 KiB  
Article
High-Efficiency Determination of Coastline by Combination of Tidal Level and Coastal Zone DEM from UAV Tilt Photogrammetry
by Chao Huang, Hongmei Zhang and Jianhu Zhao
Remote Sens. 2020, 12(14), 2189; https://0-doi-org.brum.beds.ac.uk/10.3390/rs12142189 - 08 Jul 2020
Cited by 15 | Viewed by 3656
Abstract
To meet the needs of coastline efficient extraction and dynamic monitoring, this paper proposes a new method for coastline extraction by combining the tidal level and the digital elevation model (DEM) of the coastal zone from tilt photography. Firstly, the DEM of coastal [...] Read more.
To meet the needs of coastline efficient extraction and dynamic monitoring, this paper proposes a new method for coastline extraction by combining the tidal level and the digital elevation model (DEM) of the coastal zone from tilt photography. Firstly, the DEM of coastal zone was obtained by using unmanned aerial vehicle (UAV) tilt photography; at the same time, the accuracy of aerial triangulation(AT) is improved referencing to the constraint of water boundary points, and then the mean high water spring tide was obtained by combining tidal harmonic analysis and Global Navigation Satellite System (GNSS) tidal level. Finally, the coastline and the dynamic water-surface line are extracted from the DEM of the coastal zone by tracking the contour lines with the elevation of the mean high water springs (MHWS) and the instantaneous sea-surface elevation, respectively. The experiments carried out in the coastal zones of Liaoning Province, China, proved the proposed method and achieved better than 0.2 m of horizontal position accuracy and 0.1 m of the vertical accuracy. Full article
Show Figures

Figure 1

20 pages, 43431 KiB  
Article
High-Resolution Intertidal Topography from Sentinel-2 Multi-Spectral Imagery: Synergy between Remote Sensing and Numerical Modeling
by Md Jamal Uddin Khan, MD Nazmuddoha Ansary, Fabien Durand, Laurent Testut, Marufa Ishaque, Stéphane Calmant, Yann Krien, A.K.M. Saiful Islam and Fabrice Papa
Remote Sens. 2019, 11(24), 2888; https://0-doi-org.brum.beds.ac.uk/10.3390/rs11242888 - 04 Dec 2019
Cited by 19 | Viewed by 6216
Abstract
The intertidal zones are well recognized for their dynamic nature and role in near-shore hydrodynamics. The intertidal topography is poorly mapped worldwide due to the high cost of associated field campaigns. Here we present a combination of remote-sensing and hydrodynamic modeling to overcome [...] Read more.
The intertidal zones are well recognized for their dynamic nature and role in near-shore hydrodynamics. The intertidal topography is poorly mapped worldwide due to the high cost of associated field campaigns. Here we present a combination of remote-sensing and hydrodynamic modeling to overcome the lack of in situ measurements. We derive a digital elevation model (DEM) by linking the corresponding water level to a sample of shorelines at various stages of the tide. Our shoreline detection method is fully automatic and capable of processing high-resolution imagery from state-of-the-art satellite missions, e.g., Sentinel-2. We demonstrate the use of a tidal model to infer the corresponding water level in each shoreline pixel at the sampled timestamp. As a test case, this methodology is applied to the vast coastal region of the Bengal delta and an intertidal DEM at 10 m resolution covering an area of 1134 km 2 is developed from Sentinel-2 imagery. We assessed the quality of the DEM with two independent in situ datasets and conclude that the accuracy of our DEM amounts to about 1.5 m, which is commensurate with the typical error bar of the validation datasets. This DEM can be useful for high-resolution hydrodynamic and wave modeling of the near-shore area. Additionally, being automatic and numerically effective, our methodology is compliant with near-real-time monitoring constraints. Full article
Show Figures

Graphical abstract

Other

Jump to: Research

19 pages, 7387 KiB  
Technical Note
The Use of USV to Develop Navigational and Bathymetric Charts of Yacht Ports on the Example of National Sailing Centre in Gdańsk
by Mariusz Specht, Cezary Specht, Maciej Szafran, Artur Makar, Paweł Dąbrowski, Henryk Lasota and Piotr Cywiński
Remote Sens. 2020, 12(16), 2585; https://0-doi-org.brum.beds.ac.uk/10.3390/rs12162585 - 11 Aug 2020
Cited by 21 | Viewed by 3987
Abstract
Apart from extensive infrastructure protection, modern yacht ports should primarily provide vessels with navigational safety associated with their maneuvering on the approach fairway, as well as mooring in the port aquatory. For this reason, yachts entering the harbor should have up-to-date, accurate, and [...] Read more.
Apart from extensive infrastructure protection, modern yacht ports should primarily provide vessels with navigational safety associated with their maneuvering on the approach fairway, as well as mooring in the port aquatory. For this reason, yachts entering the harbor should have up-to-date, accurate, and reliable charts of the port and its surroundings. This article presents hydrographic surveys conducted in the National Sailing Centre (NSC) yacht port at the Gdańsk University of Physical Education and Sport (GUPES), whose aim was to define and develop unique bathymetric and navigational charts of the harbor and the approach fairway. These can be used for example to manage berths in the marina or inform about the depths in the yacht port and on the approach fairway. The chart of the NSC-GUPES and its approach fairway is Poland’s first cartographic image of a harbor, performed entirely on the basis of surveys conducted by an Unmanned Surface Vehicle (USV). The study results demonstrated that the use of a small-sized USV in bathymetric measurements of yacht ports and marinas was significantly more effective than the traditional (manned) hydrographic surveys. Such vessels allow measurements to be carried out in hard-to-reach locations, even between mooring vessels, and in the immediate vicinity of quays. Thanks to the implemented automatic mode of steering on sounding profiles, USVs are equally efficient and capable of carrying out hydrographic surveys on a larger waterbody, i.e., the approach fairway. Full article
Show Figures

Graphical abstract

Back to TopTop