Water Depth Inversion From a Single SPOT-5 Dataset

Poupardin, Adrien; Idier, Déborah; Michele, Marcello de; Raucoules, Daniel

doi:10.1109/tgrs.2015.2499379

Cited by 37 publications

(31 citation statements)

References 21 publications

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“…The present example is based on the study described by [98]. The preliminary work of [99] has shown that it is possible to determine wave celerity directly from optical satellite imagery from the SPOT-5 sensor, thanks to the technical characteristics of the SPOT-5 satellite.…”

Section: Correlation-wavelet-bathymetry (Cwb) Methods (Multi-spectral)mentioning

confidence: 99%

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Monitoring Beach Topography and Nearshore Bathymetry Using Spaceborne Remote Sensing: A Review

et al. 2019

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With high anthropogenic pressure and the effects of climate change (e.g., sea level rise) on coastal regions, there is a greater need for accurate and up-to-date information about the topography of these systems. Reliable topography and bathymetry information are fundamental parameters for modelling the morpho-hydrodynamics of coastal areas, for flood forecasting, and for coastal management. Traditional methods such as ground, ship-borne, and airborne surveys suffer from limited spatial coverage and temporal sampling due to logistical constraints and high costs which limit their ability to provide the needed information. The recent advancements of spaceborne remote sensing techniques, along with their ability to acquire data over large spatial areas and to provide high frequency temporal monitoring, has made them very attractive for topography and bathymetry mapping. In this review, we present an overview of the current state of spaceborne-based remote sensing techniques used to estimate the topography and bathymetry of beaches, intertidal, and nearshore areas. We also provide some insights about the potential of these techniques when using data provided by new and future satellite missions.

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Section: Correlation-wavelet-bathymetry (Cwb) Methods (Multi-spectral)mentioning

confidence: 99%

“…The bathymetry: (a) measured; and (b) stimated by the CWB (in m) method on the area of Saint Pierre on Reunion Island. The isobaths represented in black range from 0 to 50 m depth with a step of 5 m (from[98]). …”

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Monitoring Beach Topography and Nearshore Bathymetry Using Spaceborne Remote Sensing: A Review

et al. 2019

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“…Although constant efforts by the research community have been made toward either simple or complex paradigms of coastal evolution (e.g, static retreat by Bruun, 1962;Hanson et al 2010), the coastal response to perpetually changing ocean forcing conditions is still unclear (Cooper and Pilkey, 2004;Ranasinghe et al 2016). Recently, several methods using satellite imagery have been proven reliable (Poupardin et al 2016;Bergsma et al 2019;Raucoules et al 2019) in estimating large-sale coastal bathymetry at unprecedented resolution. One prominent approach is the use of multispectral imagery in estimating shallow bathymetry, until 20 m depth approximately in the case of clear waters.…”

Section: Coastal Bathymetrymentioning

confidence: 99%

“…Among these methods, some use external data (measurements or offshore modeling), while others directly extract the wavelength and wave celerity informations from the satellite images. Despite their high potential, these methods were only applied to a limited spatial domain (Danilo and Melgani, 2016;Poupardin et al 2016) using basic wave physics (none uses the information contained in the full spectrum in an optimal way), and can still be improved. Having access to high-resolution coastal bathymetry is one major prerequisite in order to reduce uncertainty in the estimation of wave contribution to coastal sea level changes (e.g.…”

Section: Coastal Bathymetrymentioning

confidence: 99%

The Contribution of Wind-Generated Waves to Coastal Sea-Level Changes

et al. 2019

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Surface gravity waves generated by winds are ubiquitous on our oceans and play a primordial role in the dynamics of the ocean-land-atmosphere interfaces. In particular, wind-generated waves cause fluctuations of the sea level at the coast over timescales from a few seconds (individual wave runup) to a few hours (wave-induced setup). These wave-induced processes are of major importance for coastal management as they add up to tides and atmospheric surges during storm events and enhance coastal flooding and erosion. Changes in the atmospheric circulation associated with natural climate cycles or caused by increasing greenhouse gas emissions affect the wave conditions worldwide, which may drive significant changes in the wave-induced coastal hydrodynamics. Since sea-level rise represents a major challenge for sustainable coastal management, particularly in low-lying coastal areas and/or along densely urbanized coastlines, understanding the contribution of wind-generated waves to the long-term budget of coastal sea-level changes is therefore of major importance. In this review, we describe the physical processes by which sea states may affect coastal sea level at several timescales, we present the methods currently used to estimate the wave contribution to coastal sea-level changes, we describe past and future wave climate variability, we discuss the contribution of wave to coastal sea-level changes, and we discuss the limitations and perspectives of this research field.

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“…-A high spatio-temporal resolution continuous marine-land topography and bathymetry database, with height precision better than 20 cm is needed. However, lower resolution datasets such as those that can be produced with Sentinel 2 or other data may still be useful for understanding coastal evolution (e.g., Poupardin et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Requirements for a Coastal Hazards Observing System

et al. 2019

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Coastal zones are highly dynamical systems affected by a variety of natural and anthropogenic forcing factors that include sea level rise, extreme events, local oceanic and atmospheric processes, ground subsidence, etc. However, so far, they remain poorly monitored on a global scale. To better understand changes affecting world coastal zones and to provide crucial information to decision-makers involved in adaptation to and mitigation of environmental risks, coastal observations of various types need to be collected and analyzed. In this white paper, we first discuss the main forcing agents acting on coastal regions (e.g., sea level, winds, waves and currents, river runoff, sediment supply and transport, vertical land motions, land use) and the induced coastal response (e.g., shoreline position, estuaries morphology, land topography at Frontiers in Marine Science | www.frontiersin.org 1 July 2019 | Volume 6 | Article 348Benveniste et al.Requirements for a Coastal Zone Observing System the land-sea interface and coastal bathymetry). We identify a number of space-based observational needs that have to be addressed in the near future to understand coastal zone evolution. Among these, improved monitoring of coastal sea level by satellite altimetry techniques is recognized as high priority. Classical altimeter data in the coastal zone are adversely affected by land contamination with degraded range and geophysical corrections. However, recent progress in coastal altimetry data processing and multisensor data synergy, offers new perspective to measure sea level change very close to the coast. This issue is discussed in much detail in this paper, including the development of a global coastal sea-level and sea state climate record with mission consistent coastal processing and products dedicated to coastal regimes. Finally, we present a new promising technology based on the use of Signals of Opportunity (SoOp), i.e., communication satellite transmissions that are reutilized as illumination sources in a bistatic radar configuration, for measuring coastal sea level. Since SoOp technology requires only receiver technology to be placed in orbit, small satellite platforms could be used, enabling a constellation to achieve high spatio-temporal resolutions of sea level in coastal zones.

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Water Depth Inversion From a Single SPOT-5 Dataset

Cited by 37 publications

References 21 publications

Monitoring Beach Topography and Nearshore Bathymetry Using Spaceborne Remote Sensing: A Review

Monitoring Beach Topography and Nearshore Bathymetry Using Spaceborne Remote Sensing: A Review

The Contribution of Wind-Generated Waves to Coastal Sea-Level Changes

Requirements for a Coastal Hazards Observing System

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