World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Detailed Quantification of Delta Subsidence, Compaction and Interaction with Man-made Structures: the Case of the Nca Airport, France : Volume 3, Issue 6 (11/06/2015)

By Cavalié, O.

Click here to view

Book Id: WPLBN0004019436
Format Type: PDF Article :
File Size: Pages 28
Reproduction Date: 2015

Title: Detailed Quantification of Delta Subsidence, Compaction and Interaction with Man-made Structures: the Case of the Nca Airport, France : Volume 3, Issue 6 (11/06/2015)  
Author: Cavalié, O.
Volume: Vol. 3, Issue 6
Language: English
Subject: Science, Natural, Hazards
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2015
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Kelner, M., Sladen, A., & Cavalié, O. (2015). Detailed Quantification of Delta Subsidence, Compaction and Interaction with Man-made Structures: the Case of the Nca Airport, France : Volume 3, Issue 6 (11/06/2015). Retrieved from http://new.worldlibrary.net/


Description
Description: Géoazur, Université de Nice Sophia Antipolis, CNRS, IRD, Observatoire de la Côte d'Azur, 250 rue Albert Einstein, 06560 Valbonne, France. River deltas are dynamic costal systems and their evolutions are closely monitored as it often concentrates vital natural resources for the surrounding areas. Many deltas, worldwide, experience subsidence due to geological processes (sediment loading and compaction) or human activities (groundwater or hydrocarbon extraction, land reclamation). This causes shoreline erosion or wetland loss which represent serious issues for the population. In this study, we investigate the dynamic of the Var delta (France) where reclaimed lands over sea have been built to host the Nice côte d'Azur airport (NCA). Actually, the stability of this infrastructure is a permanent concern since, in 1979, a newly built extension of the runway platform collapsed in the sea, causing important damages. The project of land extension stopped, but the present airport platform is still located on reclaimed land. Factors that can trigger such catastrophic landslide are thought to be linked to the delta activity and the artificial airport platform load. We used, therefore, Envisat InSAR data to measure accurately the ground deformation of the area that includes the Var delta and NCA airport. Combining data from ascending and descending orbits, we estimated the east–west and vertical components of the deformation and obtained very accurate displacement rate (with a 1Σ error of 0.25 mm yr-1). We found that nearly all the deformation is vertical and impacts the whole Var delta. The Var valley subsides at a very low rate (0.5–1 mm yr-1) but downstream the subsidence rate increases and a clear jump is observed at the transition with the reclaimed lands (1–2 mm yr-1). On average, the reclaimed lands subside at 3 mm yr-1. Since the subsidence rate increases in correlation with the sediment thickness, we interpret it as the compaction of the delta quaternary sedimentary wedge. In addition, three areas subsides faster (between 5 and 10 mm yr-1), with one calling for more attention as it is the largest and overlooks the steep Var canyon. The progressive increase of subsidence rates toward the sea also suggests that the underwater parts of the margins could subside at rates well above 10 mm yr-1.

Summary
Detailed quantification of delta subsidence, compaction and interaction with man-made structures: the case of the NCA airport, France

Excerpt
Dokka, R. K.: Modern-day tectonic subsidence in coastal Louisiana, Geology, 34, 281–284, doi:10.1130/G22264.1, 2006.; Allen, J. R. L.: Salt-marsh growth and fluctuating sea level: implications of a simulation model for Flandrian coastal stratigraphy and peat-based sea-level curves, Sediment. Geol., 100, 21–45, 1995.; Anthony, E. J.: Problems of hazard perception on the steep, urbanised Var coastal floodplain and delta, French Riviera, Méditerranée, J. Mediterr. Geogr., 108, 91–97, 2007.; Anthony, E. J. and Julian, M.: The 1979 Var Delta landslide on the French Riviera: a retrospective analysis, J. Coast. Res., 13, 27–35, 1997.; Assier-Rzadkieaicz, S., Heinrich, P., Sabatier, P. C., Savoye, B., and Bourillet, J. F.: Numerical modelling of a landslide-generated tsunami: the 1979 Nice event, Pure Appl. Geophys., 157, 1707–1727, 2000.; Cavalié, O. and Jónsson, S.: Block-like plate movements in eastern Anatolia observed by InSAR, Geophys. Res. Lett., 41, 26–31, doi:10.1002/2013GL058170, 2014.; Cavalié, O., Doin, M.-P., Lasserre, C., and Briole, P.: Ground motion measurement in the Lake Mead area, Nevada, by differential synthetic aperture radar interferometry time series analysis: probing the lithosphere rheological structure, J. Geophys. Res., 112, B03403, doi:10.1029/2006JB004344, 2007.; Cochonat, P., Bourillet, J.-F., Savoye, B., and Dodd, L.: Geotechnical characteristics and instability of submarine slope sediments, the nice slope (NW Mediterranean Sea), Mar. Geores. Geotechnol., 11, 131–151, 1993.; Courboulex, F., Larroque, C., Deschamps, A., Kohrs-Sansorny, C., Got, C. G. J.-L., Stéphan, J. C. J.-F., Béthoux, N., Virieux, J., Brunel, D., Maron, C., Duval, A.-M., Pérez, J.-L., and Mondi, J.-L.: Seismic hazard on the French Riviera: observations, interpretations and simulations, Geophys. J. Int., 170, 387–400, 2007.; Dan, G., Sultan, N., and Savoye, B.: The 1979 Nice harbour catastrophe revisited: trigger mechanism inferred from geotechnical measurements and numerical modelling, Mar. Geol., 245, 40–64, 2007.; Doin, M.-P., Lodge, F., Guillaso, S., Jolivet, R., Lasserre, C., Ducret, G., Grandin, R., Pathier, E., and Pinel, V.: Presentation of the small baseline NSBAS processing chain on a case example: the Etna deformation monitoring from 2003 to 2010 using Envisat data, Proc. of FRINGE 2011 Workshop, Frascati, Italy, 19–23 September 2011, ESA, SP-697, 2012.; Dubar, M. and Anthony, E. J.: Holocene environmental change and river-mouth sedimentation in the Baies des Anges, French Riviera, Quat. Res., 43, 329–343, 1995.; Ericson, J. P., Vörösmarty, C. J., Dingman, S. L., Ward, L. G., and Meybeck, M.: Effective sea-level rise and deltas: causes of change and human dimension implications, Global Planet. Change, 50, 63–82, 2006.; Farr, T. G. and Kobrick, M.: Shuttle radar topography mission produces a wealth of data, Eos Trans. AGU, 81, 583–585, 2000.; Goldstein, R. M. and Werner, C. L.: Radar interferogram filtering for geophysical applications, Geophys. Res. Lett., 25, 2517–2520, 1998.; Guglielmi, Y.: Gydrogéologie des aquifères Plio-Quaternaires de la Basse Vallée du Var, Thèse d'état, Académie d'Aix-Marseille, 170 pp., 1993.; Hassoun, V., Martin, J., Migeon, S., Larroque, C., Cattaneo, A., Eriksson, M., Sanchez-Cabeza, J. A., Mercier de Lepinay, B., Liong Wee Kwong, L., Levy, I., Heimbürger, L.-E., and Miquel, J.-C.: Searching for the record of historical earthquakes, floods and anthropogenic activities in the Var Sedimentary Ridge (NW Mediterranean), Adv. Nat. Technol. Haz., 37, 571–581, 2014.; Higgins, S. A., Overeem, I., Steckler, M. S., Syvitski, J. P. M., Seeber, L., and Akhter, S. H.: InSAR measurements of compaction and subsidence in the Ganges-Brahmaputra Delta, Bangladesh, J. Geophys. Res. Earth Surf., 119, 1768–1781, doi:

 

Click To View

Additional Books


  • Geophysical Observatory in Kamchatka Reg... (by )
  • A Probabilistic Tsunami Hazard Assessmen... (by )
  • Detection of Millimetric Deformation Usi... (by )
  • Study on Multi-parameters of Thermal Inf... (by )
  • Results of the Post Flash-flood Disaster... (by )
  • Probabilistic Forecast of Daily Areal Pr... (by )
  • Rockfall Characterisation and Structural... (by )
  • Rockfall Hazard Assessment Along a Road ... (by )
  • Hydroelastic Analysis of Ice Shelves Und... (by )
  • Sensitivity of the Wrf Model to the Lowe... (by )
  • Evaluating the Effectiveness of Flood Da... (by )
  • Physical Vulnerability Modelling in Natu... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.