Frédéric Bouchette

Frédéric Bouchette
Université de Montpellier | UM1 · Geosciences Montpellier

Associate Professor HDR
Nearshore hydrodynamics, beach morphodynamics, physics for shallow water waves

About

108
Publications
23,506
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
1,757
Citations
Citations since 2017
29 Research Items
1022 Citations
2017201820192020202120222023050100150200
2017201820192020202120222023050100150200
2017201820192020202120222023050100150200
2017201820192020202120222023050100150200
Additional affiliations
August 2011 - August 2012
University of Oslo
Position
  • Invited researcher
September 2007 - September 2009
Université de Montpellier
Position
  • Associate professor at I3M
September 2007 - December 2009
Université de Montpellier
Position
  • Professor (Associate)
Education
September 1998 - March 2001
September 1996 - July 1997
September 1996 - July 1997

Publications

Publications (108)
Article
A complete annual cycle of the dynamics of fine-grained sediment supplied by the Omo and smaller rivers is simulated for Lake Turkana, one of the world’s large lakes, with the hydrodynamic, wave and sediment transport model Delft3D. The model is forced with river liquid and solid discharge and wind data in order to simulate cohesive sediment transp...
Article
Full-text available
Plain Language Summary Coral reefs are essential for human societies and ecosystems in many tropical coastlines. Having reliable hydrodynamic models of these systems is important for proper management and engineering applications. Reefs play an important role in sheltering shorelines by attenuating wave energy and slowing currents. Thus, they must...
Article
Full-text available
Optimization theory is applied to a coastal engineering problem that is the design of a port. This approach was applied to the redesign of La Turballe Port in order to increase the exploitable surface area and simultaneously reduce the occurrence of long waves within the port. Having defined the cost function as a weighted function of wave amplitud...
Poster
Full-text available
Presentation of the calibration process of a D3D-Wave spectral model in the context of the island of Maupiti (French Polynesia). This poster was presented at the Salon international du littoral, enjeux méditerranéens, Nov 2021, La Grande-Motte, France.
Article
Full-text available
Indonesia has experienced several tsunamis triggered by seismic and non-seismic (i.e., landslides) sources. These events damaged or destroyed coastal buildings and infrastructure and caused considerable loss of life. Based on the Global Earthquake Model (GEM) guidelines, this study assesses the empirical tsunami fragility to the buildings inventory...
Preprint
Full-text available
Indonesia has experienced several recent tsunamis triggered by seismic as well as non-seismic (i.e., 15 landslides) sources. These events damaged or destroyed coastal buildings and infrastructure, and caused considerable loss of life. The impact of tsunami characteristics on structural components can be represented by fragility curves. These cumula...
Article
Full-text available
Topographical complexity of coral reefs is of primary importance for a number of hydrodynamical and ecological processes. The present study is based on a series of high‐resolution seabottom elevation measurements along the Maupiti barrier reef, French Polynesia. Several statistical metrics and spectral analysis are used to characterize the spatial...
Article
This paper describes the hydrodynamic regimes reached over barrier reefs during extreme wave events. The study is based on a combined approach relying, on one hand, on an extensive in-situ experiment over the Ouano reef-lagoon system, New Caledonia and, on the other hand, on wave-resolving numerical modeling.
Article
The Lake Saint-Jean lowland is a particular area in eastern Canada as it constitutes an important Late Quaternary depocenter compared with other surrounding onshore regions. Here, the recent literature about the Late Quaternary history of the Lake Saint-Jean depocenter from the glaciated period to present-day is summarized; subsequently, we present...
Article
Full-text available
This paper reports on a combined experimental and numerical study dedicated to barrier reefs hydrodynamics. A network of pressure sensors and velocity profilers has been deployed for more than two months over the Ouano reef barrier, New Caledonia. The primary aim of the study is to assess the relevance of the classical depth-averaged momentum balan...
Article
Full-text available
This paper reports a combined observational and numerical study of wave transformation over barrier reefs. The field instrumentation, which consists in a cross-shore network of pressure sensors and one high resolution velocity profiler, has been deployed for more than two months over the Ouano reef barrier, New Caledonia. The combined analysis of o...
Article
The question of the rampant erosion of the shorelines rimming the Mekong River delta has assumed increasing importance over the last few years. Among issues pertinent to this question is how it is related to mangroves. Using high-resolution satellite images, we compared the width of the mangrove belt fringing the shoreline in 2012 to shoreline chan...
Preprint
The inception, growth, and decline of numerous large and small river deltas on Earth have been strongly influenced by human population dynamics and interventions on catchments, notably deforestation and reforestation. Over the last half century, the effects of catchment conditions in determining fluvial sediment supply have been exacerbated or mode...
Article
The inception, growth, and decline of numerous large and small river deltas on Earth have been strongly influenced by human population dynamics and interventions on catchments, notably deforestation and reforestation. Over the last half century, the effects of catchment conditions in determining fluvial sediment supply have been exacerbated or mode...
Article
Full-text available
Lakes are common natural systems for which sedimentation is considered to be relatively simple, generally dominated by fluvial processes along the margin and prevailing low-energy settling in the central, deeper parts. However, for many lakes, higher-energy wind-driven processes dominate. As such, a new category of lakes is proposed, herein referre...
Article
Full-text available
This work aims to better understand the physical processes governing the wave propagation in a vertically sheared current and the resulting nearshore circulation patterns. It is based on a high resolution hydro-morphodynamic field campaign, ROUSTY2014, collecting a comprehensive hydro-morphodynamical dataset during a full winter season. The overall...
Article
Full-text available
This manuscript reports on a novel field experiment carried out on a microtidal beach in Camargue, France. For the first time in the field, a comprehensive description of the groundwater dynamics under sandy beach swash zone is presented. A cross-shore network of 15 buried pressure sensors is combined with terrestrial LiDAR measurements to study th...
Article
Full-text available
Morphodynamics of sandy, macrotidal, embayed beaches is complex because of the numerous physical processes interacting at the same location over a wide range of temporal scales. As most of these processes are controlled by beach morphology, dynamic feedbacks are generally observed between hydro- and morphodynamics. Investigating short-term processe...
Article
Full-text available
Lakes are major depositional systems for which the related depositional processes have long been considered relatively simple. Breaking this statement, this study presents a detailed analysis of deposits in Lake Saint-Jean, the third largest natural lake in Québec. In addition to postglacial deltaic and coastal depositional systems fringing the lak...
Article
Full-text available
Differentiating between forced regressive deposits from deglacial periods in high latitude domains and forced regressive deposits from the onset of glacial periods in low latitude domains is fundamental for the accurate interpretation of glacial cycles within the geological record and then for the reconstruction of palaeogeography and palaeo-climat...
Conference Paper
Full-text available
Lake Saint-Jean is the third largest natural lake in Québec (Canada), however very few studies have focused on the basin-scale limnogeology of this lake. An initial very high-resolution seismic survey of Lake Saint-Jean was conducted in 2011, providing more than 300 km of seismic sections throughout the lake. These seismic profiles permitted the id...
Article
Full-text available
3D hydrodynamic simulations were performed on an area extending 600 km off Taiwan island for the period running from September 2011 to December 2012. We covered a winter Monsoon season and a summer season with 17 typhoons recorded. By comparing simulations and measurements during the TALIM typhoon, our model reproduces correctly the storm surge obs...
Article
Full-text available
Megalake Chad (350,000 km2), the largest paleo-lake of the Sahara-Sahel area, is one of the most emblematic marker of the hydroclimatic changes that occurred during the African Humid Period (AHP; ca. 11,500-5,000 years BP) in subtropical Africa. From field surveys, the existence of Megalake Chad is well demonstrated by widespread typical lake depos...
Conference Paper
Full-text available
Island barriers are common features along the world coastlines. They have a crucial role in protecting inland and rich lagoonal ecosystems. Erosion and sand transfers on these island barriers during extreme events such as tropical storms or typhoons remain poorly investigated. This work focuses on a multi-scales analysis (season to decade) of the m...
Conference Paper
Full-text available
In the analysis of coastal hazards, the features of extreme waves are determining information to question the impact of storms to the coast. The spatial behaviour of extreme waves is even more valuable especially since it is sparsely provided. Regarding recent applications in other contexts, a kind of statistical models called max-stable processes...
Article
Current profiles and waves were recorded from a multi-instrumented transect over a double nearshore bar system in the Gulf of Lions, NW Mediterranean Sea (France) during storm conditions with shoreface significant wave heights of up to 3.2 m. The results constitute a preliminary analysis aimed at constraining the 3D nearshore circulation in a micro...
Conference Paper
Full-text available
The present work concerns cuspate spits: slightly symmetrical geomorphic features growing along the shoreline in shallow waters. We develop a new formulation for the dynamics of cuspate spits. Our approach relies on classical paradigms such as a conservation law to the shoreface scale and an explicit formula for alongshore sediment transport. We de...
Article
Full-text available
Ocean-Solid Earth coupling is the main forcing of generating seismic noise. It has been well known that seismic noise in the frequency band from 0.05 to about 1 Hz results from ocean waves. Components of noise spectrum, also called microseisms, are used to study extreme waves during typhoons. During the KUN-SHEN project (2011-2014), wave measuremen...
Conference Paper
Full-text available
This study focuses on the dynamics of the Wan-Tzu-Liao sand barrier when it is struck by one typhoon, a group of typhoons or the whole season of typhoons and monsoon. In the framework of the KUN-SHEN project, 7 months of monitoring (2011-2012) provided 20 topobathymetric surveys (within a 200 m long segment of the barrier from the subtidal zone to...
Article
We show how to introduce the Value at Risk (VaR) concept in the analysis of the adaptation of the shape of a soft bed to a flow knowing the Probability Density Function (PDF) of the responses of the shape to flow perturbations (bed receptivity). Our aim is to quantify our confidence on simulation scenarios by an available morphodynamic model for th...
Data
Full-text available
Both short-term and long-term morphodynamics of sand barrier systems forced by moderate storm conditions have been studied significantly in the literature. However, the dynamics of the emerged beach – from a water depth of ≈ 1.5 m below the lowest tide level to the back-barrier – remain scarcely documented. This is even more striking when looking a...
Article
Both short-term and long-term morphodynamics of sand barrier systems forced by moderate storm conditions have been studied significantly in the literature. However, the dynamics of the emerged beach -- from a seaside water depth of ~ 1.5 metres below the lowest tide to the back-barrier -- impacted by typhoons remain scarcely documented. This study...
Article
Full-text available
The stratigraphy of the last deglaciation sequence is investigated in Lake Saint-Jean (Québec Province, Canada) based on 300 km of echo-sounder two dimensional seismic profiles. The sedimentary archive of this basin is documented from the Late Pleistocene Laurentidian ice-front recession to the present-day situation. Ten seismic units have been ide...
Conference Paper
Full-text available
The field campaign on the Sète coast deployed during the winter 2009 was used to understand the hydrodynamics on a double barred beach in the surf zone during storm periods. The large set of measurements collected at several position and depth were also useful to improve the 3D circulation model Symphonie that takes into account the atmospherics an...
Conference Paper
Full-text available
The present research work is a part of the KUNSHEN Franco-Taiwanese research project which aims at investigating the hydro/morphodynamics of barrier islands driven by typhoon events. This study focuses on the impact of the Talim tropical storm on the Wan-tzu-liao sand barrier (Taiwan) in terms of water level rising and watertable overheight. In-sit...
Conference Paper
Full-text available
The barrier islands usually erode seriously during the occurrence of typhoon, especially, when storm surge comes at the spring tide period. The high water level combined with typhoon wave run-up induces overwash on the barrier islands and pushes the barrier sand into the lagoon behind.. We tentatively characterize this natural phenomenon with numer...
Article
Full-text available
The main objective of the VULSACO (VULnerability of SAndy COasts to climate change and anthropic pressure) project was to investigate present day and potential future vulnerability of sandy coasts at the 2030 horizon, i.e. on a time scale related to climate variability. The method, based on a multidisciplinary approach bringing together geologists,...
Article
Most of the Mediterranean coastal porous aquifers are intensively exploited. Because of climatic and anthropogenic effects, understanding the physical and geological controls on groundwater distribution and flow dynamics in such aquifers is crucial. This study presents the results of a structural investigation of a system located along the coastlin...
Conference Paper
Full-text available
After defining the High Performance Pre- Computing —referred as HPPC— concept, the aim of the present study is to develop a prototype whether to approve or not the benefits of this concept. Our application case tries to answer the geophysical issue of coastal flooding. This is an example of an alert system based on the HPPC architecture, thus on pr...
Conference Paper
Full-text available
The wave-dominated beach barrier of Villeneuve-Lès-Maguelone extends between Palavas and Frontignan (Gulf of Lions, northernmost Mediterranean Sea), along a slightly natural sandy protected area characterized by typical and well-expressed morphologies. In the nearshore, the sea bottom shows one or two approximately rectilinear sand bars. In 2010-20...