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Detection, measurement and prediction of shoreline recession in Accra, Ghana / K. Appeaning Addo in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 5 (September - October 2008)
[article]
Titre : Detection, measurement and prediction of shoreline recession in Accra, Ghana Type de document : Article/Communication Auteurs : K. Appeaning Addo, Auteur ; M. Walkden, Auteur ; Jon P. Mills, Auteur Année de publication : 2008 Article en page(s) : pp 543 - 558 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse diachronique
[Termes IGN] données de terrain
[Termes IGN] érosion côtière
[Termes IGN] Ghana
[Termes IGN] incertitude des données
[Termes IGN] littoral
[Termes IGN] modèle de simulation
[Termes IGN] montée du niveau de la mer
[Termes IGN] trait de côteRésumé : (Auteur) Coastal mapping, using various data capture and feature extraction techniques, has furthered understanding of trends in shoreline evolution by allowing calculation of accurate historic rates of change that subsequently enable the prediction of future shoreline positions through different modelling procedures. The results have helped influence coastal policy formulation and promoted the development of sustainable management practices in coastal regions throughout the developed world. However, sustainable coastal management is rarely practiced in developing countries, one of the fundamental reasons for this being a general lack of reliable and accurate historic data on shoreline position. Previous studies on the Ghanaian coastal region of Accra, where accurate and reliable geospatial data for analysis is scarce, have reported erosion rates of anything between two and eight metres per year. This high level of inconsistency in reported rates has hindered effective and sustainable coastal management. The research reported in this paper addresses this issue, using mapping data from 1904, 1974, 1996 and 2002 to estimate, by linear regression, shoreline recession in the Accra region. Predictions for the next 250 yr were then undertaken using a variety of techniques ranging from a process-based numerical model, SCAPE, to geometric approaches including historical trend analysis, the modified Bruun model and Sunamura’s shore platform model. Uncertainties in the various input data were accounted for, including historic recession rates, rock strength, sediment content and, importantly, future sea-level rise under different climate change scenarios. The mean historic rate of erosion in the Accra region was found to be 1.13 m/yr(10.17 m/yr), significantly less than previously reported, though still very high. Subsequent predictions were used to identify a series of significant economic, ecological and social features at risk, and to estimate when they will most likely be lost to erosion if left unprotected. The case study illustrates that, provided suitable predictive models are selected and the uncertainties involved in working with limited data sets are dealt with appropriately, it is possible to provide statistical information in support of sustainable coastal management for developing countries in the face of a changing climate. Copyright ISPRS Numéro de notice : A2008-387 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2008.04.001 En ligne : https://doi.org/10.1016/j.isprsjprs.2008.04.001 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29380
in ISPRS Journal of photogrammetry and remote sensing > vol 63 n° 5 (September - October 2008) . - pp 543 - 558[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-08051 SL Revue Centre de documentation Revues en salle Disponible Raster modelling of coastal flooding from sea-level rise / B. Poulter in International journal of geographical information science IJGIS, vol 22 n° 1-2 (february 2008)
[article]
Titre : Raster modelling of coastal flooding from sea-level rise Type de document : Article/Communication Auteurs : B. Poulter, Auteur ; P. Halpin, Auteur Année de publication : 2008 Article en page(s) : pp 167 - 182 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] analyse spatio-temporelle
[Termes IGN] Caroline du Nord (Etats-Unis)
[Termes IGN] changement climatique
[Termes IGN] données lidar
[Termes IGN] érosion côtière
[Termes IGN] modèle mathématique
[Termes IGN] modèle numérique de surface
[Termes IGN] montée du niveau de la mer
[Termes IGN] nivellement directRésumé : (Auteur) As rates of sea-level rise continue to increase due to climate change, land planners require accurate spatial analyses on the extent and timing of coastal flooding and associated hazards. Digital elevation data used to evaluate coastal vulnerability to flooding are available at various horizontal and vertical resolutions. However, the quality of digital elevation models (DEM) used in environmental assessment can significantly affect the detection of topographic features and the magnitude of hydrological processes. We used lidar elevation data in coastal North Carolina, USA to investigate the effects of horizontal resolution and connectivity on the extent and timing of flooding from sea-level rise. We found that the rate and extent of inundation were dependent on horizontal resolution and assumptions made on hydrological connectivity. The variation in flood extent was much larger (760 km2) at low sea-level projections (~0.9 m, 114 km2) due to the effect of hydrological corrections on the coarse-scale DEM and topographic complexity at low elevations. Lidar elevation data provide a significant advance in mapping potential coastal flooding, but the extent and timing of inundation are sensitive to horizontal resolution and the modelling of hydrological connectivity. Copyright Taylor & Francis Numéro de notice : A2008-106 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810701371858 En ligne : https://doi.org/10.1080/13658810701371858 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29101
in International journal of geographical information science IJGIS > vol 22 n° 1-2 (february 2008) . - pp 167 - 182[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-08011 RAB Revue Centre de documentation En réserve L003 Disponible 079-08012 RAB Revue Centre de documentation En réserve L003 Disponible Geocentric sea-level trend estimates from GPS analyses at relevant tide gauges world-wide / Guy Wöppelmann in Global and Planetary Change, vol 57 n° 3-4 (June 2007)
[article]
Titre : Geocentric sea-level trend estimates from GPS analyses at relevant tide gauges world-wide Type de document : Article/Communication Auteurs : Guy Wöppelmann , Auteur ; Bélen Martín Míguez, Auteur ; Marie-Noëlle Bouin , Auteur ; Zuheir Altamimi , Auteur Année de publication : 2007 Article en page(s) : pp 396 - 406 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] déformation verticale de la croute terrestre
[Termes IGN] données marégraphiques
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] montée du niveau de la merRésumé : (auteur) The problem of correcting the tide gauge records for the vertical land motion upon which the gauges are settled has only been partially solved. At best, the analyses so far have included model corrections for one of the many processes that can affect the land stability, namely the Glacial-Isostatic Adjustment (GIA). An alternative approach is to measure (rather than to model) the rates of vertical land motion at the tide gauges by means of space geodesy. A dedicated GPS processing strategy is implemented to correct the tide gauges records, and thus to obtain a GPS-corrected set of ‘absolute’ or geocentric sea-level trends. The results show a reduced dispersion of the estimated sea-level trends after application of the GPS corrections. They reveal that the reference frame implementation is now achieved within the millimetre accuracy on a weekly basis. Regardless of the application, whether local or global, we have shown that GPS data analysis has reached the maturity to provide useful information to separate land motion from oceanic processes recorded by the tide gauges or to correct these latter. For comparison purposes, we computed the global average of sea-level change according to Douglas [Douglas, B.C., 2001. Sea level change in the era of the recording tide gauge. Int. Geophys. Ser., 75, pp. 37–64.] rules, whose estimate is 1.84 ± 0.35 mm/yr after correction for the GIA effect [Peltier, W.R., 2001. Global glacial isostatic adjustment and modern instrumental records of relative sea level history. Int. Geophys. Ser., 75, pp. 65–95.]. We obtain a value of 1.31 ± 0.30 mm/yr, a value which appears to resolve the ‘sea level enigma’ [Munk, W., 2002. Twentieth century sea level: an enigma. Proc. Natl. Acad. Sci. U.S.A., 99(10), pp. 6550–6555]. Numéro de notice : A2007-687 Affiliation des auteurs : LASTIG+Ext (2016-2019) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.gloplacha.2007.02.002 Date de publication en ligne : 12/02/2007 En ligne : https://doi.org/10.1016/j.gloplacha.2007.02.002 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102786
in Global and Planetary Change > vol 57 n° 3-4 (June 2007) . - pp 396 - 406[article]A system analysis of salt marsh development along the mainland coast of the Dutch Wadden Sea / Brigit Janssen-Stelder (2000)
Titre : A system analysis of salt marsh development along the mainland coast of the Dutch Wadden Sea Type de document : Thèse/HDR Auteurs : Brigit Janssen-Stelder, Auteur Editeur : Utrecht : Université d'Utrecht Année de publication : 2000 Collection : Netherlands Geographical Studies NGS, ISSN 0169-4839 num. 275 Importance : 128 p. Format : 17 x 24 cm ISBN/ISSN/EAN : 978-90-6809-302-5 Note générale : Bibliographie
90-6266-188-2 (Thesis)Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Ecologie
[Termes IGN] analyse spatiale
[Termes IGN] érosion côtière
[Termes IGN] estuaire
[Termes IGN] littoral
[Termes IGN] marais salé
[Termes IGN] montée du niveau de la mer
[Termes IGN] Pays-Bas
[Termes IGN] sédimentation
[Termes IGN] Wadden, mer desNuméro de notice : 11784 Affiliation des auteurs : non IGN Nature : Thèse étrangère DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62532 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 11784-01 50.10 Livre Centre de documentation Environnement Disponible Sea level changes / P.A. Pirazzoli (1998)
Titre : Sea level changes : The last 20.000 years Type de document : Monographie Auteurs : P.A. Pirazzoli, Auteur ; Centre national de la recherche scientifique, Auteur Editeur : New York, Londres, Hoboken (New Jersey), ... : John Wiley & Sons Année de publication : 1998 Importance : 211 p. Format : 15 x 23 cm ISBN/ISSN/EAN : 978-0-471-96913-6 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géophysique interne
[Termes IGN] glaciation
[Termes IGN] montée du niveau de la mer
[Termes IGN] niveau moyen des mers
[Termes IGN] océanNuméro de notice : 59077 Affiliation des auteurs : non IGN Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=60510 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 59077-01 47.10 Livre Centre de documentation En réserve M-103 Disponible Elévation du niveau de la mer le long des côtes de France / C. Auger (1994)PermalinkIOC-UNEP Workshop on impacts of sea-level rise due to global warming / Intergovernmental oceanographic commission (1992)Permalink