Stéphane Costa

ORCID: 0000-0001-9347-3920
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About
Contact & Profiles
Research Areas
  • Coastal and Marine Dynamics
  • Aeolian processes and effects
  • Flood Risk Assessment and Management
  • Landslides and related hazards
  • Geology and Paleoclimatology Research
  • Maritime and Coastal Archaeology
  • Soil erosion and sediment transport
  • Geological formations and processes
  • Coastal and Marine Management
  • French Urban and Social Studies
  • Remote Sensing and LiDAR Applications
  • 3D Surveying and Cultural Heritage
  • Tropical and Extratropical Cyclones Research
  • Geological Modeling and Analysis
  • Cryospheric studies and observations
  • Geological and Geophysical Studies Worldwide
  • Coastal wetland ecosystem dynamics
  • Oil Spill Detection and Mitigation
  • Climate variability and models
  • Climate Change, Adaptation, Migration
  • Ocean Waves and Remote Sensing
  • Meteorological Phenomena and Simulations
  • Geophysics and Gravity Measurements
  • Methane Hydrates and Related Phenomena
  • Island Studies and Pacific Affairs

Universitas Swadaya Gunung Jati
2025

Université de Caen Normandie
2015-2024

Normandie Université
2017-2024

Centre National de la Recherche Scientifique
2015-2024

Identités et Différenciation de l'Environnement des Espaces et des Sociétés
2022-2024

Littoral, Environnement, Télédétection, Géomatique
2013-2022

Institut Universitaire Européen de la Mer
2018-2022

Territoires
2002-2018

Nantes Université
2004

Agenzia Regionale Prevenzione e Ambiente della Regione Emilia-Romagna
2000

This article proposes a new methodological approach to measure and map the size of coarse clasts on land surface from photographs. method is based use Mask Regional Convolutional Neural Network (R-CNN) deep learning algorithm, which allows instance segmentation objects after an initial training manually labeled data. The algorithm capable identifying classifying present in image at pixel scale, without human intervention, matter seconds. work demonstrates that it possible train model detect...

10.3390/rs12213659 article EN cc-by Remote Sensing 2020-11-08

Abstract Atoll islands face increasing coastal risks (coastal erosion and marine flooding) due to climate change, especially sea-level rise. To risks, various adaptation options are considered by atoll countries territories, including in particular hard protection (preferred option date), Nature-based Solutions (increasingly used) island raising (considered a longer-term solution potential alternative international migration, e.g. the Maldives). Internal relocation within same or atoll,...

10.1038/s41598-022-18109-8 article EN cc-by Scientific Reports 2022-08-19

The chalk cliffs of northern France are exposed to considerable erosion, resulting in a significant coastal retreat up 1 m per year on average. A key concern is how the mechanical properties evolve under different weathering conditions. Previous research, based limited number samples, has provided preliminary understanding potential changes altered and unaltered states. As part DEPHY3GEO project, we conducted experiments Saint Marguerite Chalk, which Newhaven Chalk Formation. Due inherent...

10.5194/egusphere-egu25-11784 preprint EN 2025-03-14

The land of an area is utilized in such a way as to support human activities. This use influential generating traffic generation and attraction. However, often misused, which can cause conflicts congestion. congestion that occurs illustrates the condition road with decreased level service unable accommodate number vehicles passing by. One roads became research location Jalan Pekalipan. Pekalipan located trade, shops, warehouses, there misuse pedestrian roads. Activities side obstacles affect...

10.46799/ajesh.v4i3.573 article EN cc-by-sa Asian Journal of Engineering Social and Health 2025-03-18

This paper aims to compare models from terrestrial laser scanning (TLS), photogrammetry (TP), and unmanned aerial vehicle (UAVP) surveys evaluate their potential in cliff erosion monitoring. TLS has commonly been used monitor cliff-face (monitoring since 2010 Normandy) because it guarantees results of high precision. Due some uncertainties limitations TLS, TP UAVP can be seen as alternative methods. First, the texture quality is better than that which could useful for analysis...

10.1080/15481603.2017.1408931 article EN GIScience & Remote Sensing 2017-11-22

Entre les mois de décembre 2013 et mars 2014, une douzaine tempêtes ont touché la pointe bretonne avec fréquence exceptionnelle. C’est au février que ces évènements été plus fréquents particulièrement virulents. Les hauteurs significatives des vagues mesurées large du Finistère atteint respectivement 12,3 m 12,4 lors Petra Ulla 5 14 février. L’analyse conditions hydrodynamiques montre toutefois seuls trois épisodes morphogènes car ils combinés à fortes marées vive-eau ; il s’agit couvrant...

10.4000/geomorphologie.11104 article FR Géomorphologie relief processus environnement 2015-09-07

Costa, S.; Maquaire, O.; Letortu, P.; Thirard, G.; Compain, V.; Roulland, T.; Medjkane, M.; Davidson, R.; Graff, K.; Lissak, C.; Delacourt, Duguet, Fauchard, C., and Antoine, R., 2019. Sedimentary coastal cliffs of Normandy: Modalities quantification retreat. In: Castelle, B. Chaumillon, E. (eds.), Coastal Evolution under Climate Change along the Tropical Overseas Temperate Metropolitan France. Journal Research, Special Issue No. 88, pp. 46–60. Coconut Creek (Florida), ISSN 0749-0208.This...

10.2112/si88-005.1 article EN Journal of Coastal Research 2019-12-11

Les falaises de Haute-Normandie connaissent une intense dynamique régressive qui a surtout été étudiée à travers le suivi du haut falaise. La comparaison l'orthophotographie 2008 (BD Ortho®, IGN) avec l'analyse photogrammétrique initiale (1966-1995 ; Costa, 2000) fournit des résultats sur période plus longue (1966-2008, soit 42 ans). Ces vitesses ont calculées tous les 50 m pour mettre en évidence phénomènes grande échelle, notamment l'influence obstacles comme éboulements/écroulements...

10.4000/geomorphologie.10588 article FR Géomorphologie relief processus environnement 2014-09-02

Abstract The aim of this paper is to quantify and map the impact post‐Little Ice Age climate change on coastal evolution three glacier catchments in Kongsfjorden area Svalbard. Climatic data at Ny‐Ålesund indicate an increase annual mean air temperature +4 °C from 1969 2016 precipitation. On northern coast Brøgger Peninsula, Austre Lovénbreen, Midtre Vestre Lovénbreen glaciers have experienced a net retreat response changing meteorological conditions. Because retreat, disclosed large 7 km 2...

10.1002/ldr.3149 article EN Land Degradation and Development 2018-09-06

Le 10 mars 2008, une tempête a touché la pointe nord-ouest de l'Europe pendant marée vive-eau, générant nombreux dégâts et des cas submersion sur les côtes France. Les niveaux d'eau exceptionnels atteints ce jour-là sont dus à combinaison deux phénomènes indépendants (surcote importante accompagnée d'une mer énorme pleine vive-eau). maximums l'origine basses ont été chaque fois précédés par le passage d'un front froid. vitesses vent hauteurs houles atteintes cette période retour ans. mesurés...

10.4000/norois.3242 article FR Norois 2010-09-30

Abstract The chalk cliffs of Normandy and Picardy are retreating rapidly approaching the built-up areas located near shore. Previous studies cliff retreat in this area suffer from a large margin error (absolute position is ±7 m) due to techniques methods used. This paper presents recent study which aims quantify between 1966 1995 by means photogrammetric analysis. In addition very high accuracy results ±0.3 m), technique gives geo-referenced numeric data allowing creation geographical...

10.1144/gsl.eng.2004.020.01.11 article EN Geological Society London Engineering Geology Special Publications 2004-01-01

The future mission of surface water and ocean topography (SWOT), launched in 2020 over a period 3–5 years, will be designated to address the issue combining hydrology with physical oceanography aiming present new perspectives applications for coastal areas. extent which synthetic SWOT measurements can reproduce temporal variability sea level was investigated. eastern English Channel (NW France) considered as case application. hourly sea-level records were filtered from aliased harmonic tides...

10.1109/jstars.2015.2419693 article EN IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 2015-04-01
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