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Recent tectonic activity of the Gafsa fault through morphometric analysis: Southern Atlas of Tunisia / Mehdi Ben Hassen in Quaternary International, vol 338 ([04/08/2014])
[article]
Titre : Recent tectonic activity of the Gafsa fault through morphometric analysis: Southern Atlas of Tunisia Type de document : Article/Communication Auteurs : Mehdi Ben Hassen, Auteur ; Benoit Deffontaines , Auteur ; Mohamed Moncef Turki, Auteur Année de publication : 2014 Article en page(s) : pp 99 - 112 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géologie
[Termes IGN] faille géologique
[Termes IGN] géomorphométrie
[Termes IGN] modèle numérique de surface
[Termes IGN] réseau hydrographique
[Termes IGN] TunisieRésumé : (auteur) This article focuses on the neotectonics of the southern Atlas of Tunisia based on morphometric analyses. Five major relevant morphometric parameters were processed and analyzed: residual topography, hypsometric index, drainage anomalies, maximum vertical curvature, and terrain roughness, and compared to the structural and tectonics of the study area. These are relevant to describe the topographic changes, and therefore suggest possible neotectonic activity. The analysis of these morphometric indices reveals that two structures in the study area (Jebels Ben Younes and Bou Ramli) are distinguished by a specific morphometric footprint: high residual topography, high hypsometric integral value of some watersheds (HI > 0.6), high frequency of drainage anomalies, high maximum vertical curvature, and high roughness index. The correlation of these geomorphic indices with the structural pattern of the study area confirms the neotectonic reactivation (dating from the Quaternary) and the dextral strike-slip component of the Gafsa fault (the major tectonic feature in the southern Atlas of Tunisia). Thus, the morphometric analysis of the Digital Elevation Model and the drainage network provide a more accurate insight into the morphodynamics of the study area. Numéro de notice : A2014-813 Affiliation des auteurs : UPEM-LASTIG+Ext (2016-2019) Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.quaint.2014.05.009 Date de publication en ligne : 03/06/2014 En ligne : https://doi.org/10.1016/j.quaint.2014.05.009 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90657
in Quaternary International > vol 338 [04/08/2014] . - pp 99 - 112[article]Documents numériques
en open access
Recent tectonic activity of the Gafsa fault ... - pdf éditeurAdobe Acrobat PDF Soil erosion assessment in Rangit catchment, India through a process-based model in the geospatial environment / Hari Venkata Durga Rao Korada in Geocarto international, vol 29 n° 5 - 6 (August - October 2014)
[article]
Titre : Soil erosion assessment in Rangit catchment, India through a process-based model in the geospatial environment Type de document : Article/Communication Auteurs : Hari Venkata Durga Rao Korada, Auteur ; Venkateshwar Rao Vala, Auteur Année de publication : 2014 Article en page(s) : pp 507-519 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] analyse diachronique
[Termes IGN] bassin hydrographique
[Termes IGN] effondrement de terrain
[Termes IGN] érosion
[Termes IGN] Inde
[Termes IGN] modèle numérique de surface
[Termes IGN] occupation du sol
[Termes IGN] rivière
[Termes IGN] sédimentationRésumé : (auteur) The accurate assessment of soil erosion in the spatial environment can give valuable input in designing reservoirs and for preparing watershed management action plans. Rangit River in northeastern India is affected by severe soil erosion, causing reduction in its reservoir capacity. The main aim of the paper is to estimate the soil erosion in the Rangit catchment, India through a process-based soil erosion model that integrates remote sensing and field data in the geospatial domain, and also to identify the problem areas for further watershed management action plans. Various topographic parameters that were derived from land use, soil texture and a digital elevation model were used for the estimation of soil erosion. The Morgan, Morgan and Finny model was used to compute soil erosion. Based on the drainage pattern, the catchment was divided into eight sub-catchments for detailed study. Annual soil erosion was estimated for four years from 2002 to 2005 using the corresponding year’s meteorological data. Estimated soil erosion was compared with the field data in each year and found very good correlation. Numéro de notice : A2014-409 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2013.798359 En ligne : https://doi.org/10.1080/10106049.2013.798359 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73946
in Geocarto international > vol 29 n° 5 - 6 (August - October 2014) . - pp 507-519[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 059-2014031 RAB Revue Centre de documentation En réserve L003 Disponible Spatial and temporal change in landslide hazard by future climate change scenarios using probabilistic-based frequency ratio model / Moung-Jin Lee in Geocarto international, vol 29 n° 5 - 6 (August - October 2014)
[article]
Titre : Spatial and temporal change in landslide hazard by future climate change scenarios using probabilistic-based frequency ratio model Type de document : Article/Communication Auteurs : Moung-Jin Lee, Auteur ; Song Won-Kyong, Auteur ; et al., Auteur Année de publication : 2014 Article en page(s) : pp 639-662 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] base de données localisées
[Termes IGN] cartographie des risques
[Termes IGN] changement climatique
[Termes IGN] Corée du sud
[Termes IGN] effondrement de terrain
[Termes IGN] risque naturel
[Termes IGN] simulationRésumé : (auteur) The aims of this study were to apply, verify and compare a frequency ratio model for landslide hazards, considering future climate change and using a geographic information system in Inje, Korea. Data for the future climate change scenario (A1B), topography, soil, forest, land cover and geology were collected, processed and compiled in a spatial database. The probability of landslides in the study area in target years in the future was then calculated assuming that landslides are triggered by a daily rainfall threshold. Landslide hazard maps were developed for the two study areas, and the frequency ratio for one area was applied to the other area as a cross-check of methodological validity. Verification results for the target years in the future were 82.32–84.69%. The study results, showing landslide hazards in future years, can be used to help develop landslide management plans. Numéro de notice : A2014-420 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2013.826739 En ligne : https://doi.org/10.1080/10106049.2013.826739 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73957
in Geocarto international > vol 29 n° 5 - 6 (August - October 2014) . - pp 639-662[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 059-2014031 RAB Revue Centre de documentation En réserve L003 Disponible Continental hydrology loading observed by VLBI measurements / David Eriksson in Journal of geodesy, vol 88 n° 7 (July 2014)
[article]
Titre : Continental hydrology loading observed by VLBI measurements Type de document : Article/Communication Auteurs : David Eriksson, Auteur ; Daniel S. MacMillan, Auteur Année de publication : 2014 Article en page(s) : pp 675 - 690 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] déformation de la croute terrestre
[Termes IGN] données GRACE
[Termes IGN] données ITGB
[Termes IGN] effet de charge
[Termes IGN] modèle hydrographiqueRésumé : (Auteur) Variations in continental water storage lead to loading deformation of the crust with typical peak-to-peak variations at very long baseline interferometry (VLBI) sites of 3–15 mm in the vertical component and 1–2 mm in the horizontal component. The hydrology signal at VLBI sites has annual and semi-annual components and clear interannual variations. We have calculated the hydrology loading series using mass loading distributions derived from the global land data assimilation system (GLDAS) hydrology model and alternatively from a global grid of equal-area gravity recovery and climate experiment (GRACE) mascons. In the analysis of the two weekly VLBI 24-h R1 and R4 network sessions from 2003 to 2010 the baseline length repeatabilities are reduced in 79 % (80 %) of baselines when GLDAS (GRACE) loading corrections are applied. Site vertical coordinate repeatabilities are reduced in about 80 % of the sites when either GLDAS or GRACE loading is used. In the horizontal components, reduction occurs in 70–80 % of the sites. Estimates of the annual site vertical amplitudes were reduced for 16 out of 18 sites if either loading series was applied. We estimated loading admittance factors for each site and found that the average admittances were 1.01 ± 0.05 for GRACE and 1.39 ± 0.07 for GLDAS. The standard deviations of the GRACE admittances and GLDAS admittances were 0.31 and 0.68, respectively. For sites that have been observed in a set of sufficiently temporally dense daily sessions, the average correlation between VLBI vertical monthly averaged series and GLDAS or GRACE loading series was 0.47 and 0.43, respectively. Numéro de notice : A2014-414 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-014-0713-0 Date de publication en ligne : 19/04/2014 En ligne : https://doi.org/10.1007/s00190-014-0713-0 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73954
in Journal of geodesy > vol 88 n° 7 (July 2014) . - pp 675 - 690[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 266-2014071 SL Revue Centre de documentation Revues en salle Disponible Big scanning on a small scale / Stephen Richardson in GEO: Geoconnexion international, vol 13 n° 6 (june 2014)
[article]
Titre : Big scanning on a small scale Type de document : Article/Communication Auteurs : Stephen Richardson, Auteur Année de publication : 2014 Article en page(s) : pp 26 - 28 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] balayage laser
[Termes IGN] courant marin
[Termes IGN] érosion hydrique
[Termes IGN] littoral
[Termes IGN] petite échelle
[Termes IGN] vagueRésumé : (Auteur) Understanding the way that waves, currents and sediments interact with coastal structures, and the potential impact they can have, is far from simple. Stephen Richardson explains how 3D laser scanners are helping to improve the design of these structures and how use of this technology on a small scale can deliver big benefits. Numéro de notice : A2014-305 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33208
in GEO: Geoconnexion international > vol 13 n° 6 (june 2014) . - pp 26 - 28[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 062-2014061 SL Revue Centre de documentation Revues en salle Disponible Carbon storage in biomass, litter, and soil of different plantations in a semiarid temperate region of northwest China / Yang Gao in Annals of Forest Science, vol 71 n° 4 (June 2014)PermalinkDetermination of periodic variations in sub-daily GPS positions of volcanic areas / Gözde Akay in Geomatica, vol 68 n° 2 (June 2014)PermalinkDiscrimination des unités géologiques et structurales du socle précambrien de l'Afrique de l'ouest à l'aide de transformations multispectrales : cas du degré carré de Korhogo au nord de la Côte d'Ivoire / K. Kouamé in Photo interprétation, European journal of applied remote sensing, vol 50 n° 2 (juin 2014)PermalinkManaging coppice forests for rockfall protection: lessons from modeling / Anna Radkte in Annals of Forest Science, vol 71 n° 4 (June 2014)PermalinkMonitoring coastal morphological changes using remote sensing and GIS in the Red river delta area, Vietnam / Si Son Tong in Photo interprétation, European journal of applied remote sensing, vol 50 n° 2 (juin 2014)PermalinkReal-time deformation monitoring by a wireless network of low-cost GPS / Lionel Benoit in Journal of applied geodesy, vol 8 n° 2 (June 2014)PermalinkTowards linking aboveground vegetation properties and soil microbial communities using remote sensing / Yuki Hamada in Photogrammetric Engineering & Remote Sensing, PERS, vol 80 n° 4 (April 2014)PermalinkLes Geocubes : réseau de capteurs autonomes géolocalisés pour la surveillance de structures et de zones à risque / Lionel Benoit in XYZ, n° 138 (mars - mai 2014)PermalinkLong-term vertical land motion from double-differenced tide gauge and satellite altimetry data / Alvaro Santamaria Gomez in Journal of geodesy, vol 88 n° 3 (March 2014)PermalinkTrajectory models and reference frames for crustal motion geodesy / Michael Bevis in Journal of geodesy, vol 88 n° 3 (March 2014)Permalink