Bathymetry Time Series Using High Spatial Resolution Satellite Images

Manuel Erena,Ángel Pérez-Ruzafa,Sandra García-Galiano,José A. Domínguez,Juan Soria,Joaquín F. Atenza

doi:10.3390/w12020531

Abstract

The use of the new generation of remote sensors, such as echo sounders and Global Navigation Satellite System (GNSS) receivers with differential correction installed in a drone, allows the acquisition of high-precision data in areas of shallow water, as in the case of the channel of the Encañizadas in the Mar Menor lagoon. This high precision information is the first step to develop the methodology to monitor the bathymetry of the Mar Menor channels. The use of high spatial resolution satellite images is the solution for monitoring many hydrological changes and it is the basis of the three-dimensional (3D) numerical models used to study transport over time, environmental variability, and water ecosystem complexity.

Highlights

IntroductionThe use of numerical models as a tool to anticipate the effects of human impacts or climate change effects on marine ecosystems has increased in the last decade
The issues of hydro-sedimentary processes in lagoons, estuaries, and enclosed bays are important in terms of coastal management, because they are generally characterized by a strong human presence that results in the release of contaminants and large quantities of nutrients into the ecosystem [1].There are many methodologies to study the nutrients in ecosystems; one of them, possibly the most used, is the three-dimensional (3D) numerical model.The use of numerical models as a tool to anticipate the effects of human impacts or climate change effects on marine ecosystems has increased in the last decade
The results are a function of the different steps of the project; these are summarized as follows: IMIDA06 Unmanned Surface Vehicle (USV) has been developed by IPH and IMIDA and has provided a good bathymetry map, with a spatial resolution of 50 cm and an error equal to ±3 cm (Figure 9)

Summary

Introduction

The use of numerical models as a tool to anticipate the effects of human impacts or climate change effects on marine ecosystems has increased in the last decade They permit to simulate hydrodynamic process, tides, currents, wave action, sediment transport, pollutant dispersal or biological connectivity. 21/3 [6]; MIKE3 [7], MOHIDWater [8], 3D-MOHID [9], NHWAVE [10], REF-DIF1 [11], ROM [12,13], SELFE [14,15], SCHISM [16,17], SHYFEM [18,19], SHORECIRC [20], SWAN [21] or TELEMAC [22] Some of these models are mainly applied to shallow coastal waters. A synthesis of concepts and recommendations for model selection, mainly applied to coastal lagoons modelling, is presented by [23]

Objectives

Results

Discussion

Conclusion