Éditeur(s) : HAL CCSD
Résumé : International audience
After the 2009 Morakot typhoon, which triggered numerous large landslides in Taiwan, Mouyen et al. (2013)showed for the first time the potential of time-lapse gravity survey to infer the mass of sediments transferringby landsliding or through rivers. By providing an integrated measurement of masses, gravimetry might thus becomplementary to common methods used to assess the sediments discharge of rivers. But the masses of rocksdisplaced by Morakot were exceptionally large as a result of the record-breaking rainfalls brought by this typhoonand one might wonder to what extent time-lapse gravimetry could record such sediment transfers. In order tobetter assess the capabilities of this method, we set a time-lapse gravity network dedicated to the monitoring ofsuch sediments transfers in Paolai village (south-central Taiwan). Paolai is located near the large Laonong riverwhere temporary alluvial deposits of sediments exist and face steep mountain slopes likely to experience landslides.Both features are considered as potential source of mass transfers, and in turn of temporal gravity changes. Thefirst base gravity measurements were done in November 2015, using absolute and relative gravimeters, and will berepeated every year, before and after the typhoon season. In the same time, we also use a terrestrial lidar to scan thegeometry of both the river and the mountain slopes, hence providing a detailed topographical survey of the studiedarea. Adding Lidar measurements is an efficient strategy to solve for the non-uniqueness of gravity solutions.Meanwhile, we use the Eros morphodynamic model, that combine landsliding and flooding models, to investigatevarious scenarios of landsliding and subsequent sediment transport and compute the gravity changes on a virtualnetwork of gravimeters. This gives us insights on the expected order of magnitudes for these surface sedimenttransfers, which are useful to unravel the induced gravity signal from others sources such as local hydrology orvertical ground displacements. The modeling results also enable us to set network location that are best defined todetect mass changes associated with sediment transfer. The main objective of this study is to test whether timelapsegravity brings a new and reliable information compared to present methods monitoring sediments transfersand landscape evolution.
European Geosciences Union General Assembly 2016
Vienne, Austria

insu-01308554
https://hal-insu.archives-ouvertes.fr/insu-01308554

Éditeur(s) : HAL CCSD Oxford University Press (OUP)
Résumé : Geophysical Journal International, v. 173, n. 2, p. 473-482, 2008. http://dx.doi.org/10.1111/j.1365-246X.2008.03718.x
International audience
The western Provence in southern France is an intraplate low deforming region, cut by large sinistral strike-slip faults as the Nîmes Fault. The deformation rate of this fault was estimated at 0.1 mm yr−1 from geological and morphological observations. Nevertheless, some large earthquakes occurred in this area in historical times inducing well-documented partial destructions on the roman monument 'Pont-du-Gard'. In order to investigate if this area is seismically active, we installed a temporary seismological network of 14 stations between the cities of Nîmes and Avignon for a 1-yr period (2002 July–2003 June). We recorded and located a total amount of 80 earthquakes of magnitude Ml smaller than 2.8, and of 153 quarry blasts. The seismic event locations are interpreted in terms of regional tectonics as well as of geometry at depth of the Nîmes Fault and of possible seismic activity of the Roquemaure Fault. At the beginning of 2002 September, a catastrophic storm occurred in the same area with cumulated precipitations at 600 mm in 28 hr, causing casualties and major inundations and damages. We identified a clear and sudden increase of the seismic activity as an immediate consequence of this exceptional meteorological phenomenon. We interpret this rainfall triggering of earthquakes as the response of the crust to an abrupt vertical loading. The geological context of this zone is characterized by the presence of sedimentary basins and of an important karstic network in a calcareous environment allowing the retention of a third of the total rainwater volume during few weeks after the catastrophic storm. Month by month inversion of the seismic wave velocities for only the first 1-km thick layer of the crust allows investigating the influence of the stored water. A clear decrease of both P- and S-velocities, and an increase of the Vp/Vs ratio are evidenced. The variations obtained are at 2, 6 and 4.5 per cent for P-, S-velocities and Vp/Vs ratio, respectively. These variations are discussed in confront of previous studies and can be directly related to the known water volume.
ISSN: 0956-540X

hal-00407884
https://hal.archives-ouvertes.fr/hal-00407884
https://hal.archives-ouvertes.fr/hal-00407884v2/document
https://hal.archives-ouvertes.fr/hal-00407884/file/rigoGJI2008.pdf
DOI : 10.1111/j.1365-246X.2008.03718.x

Éditeur(s) : Paris : Bossard
Description : Recueil de morceaux choisis d'oeuvres poétiques haïtiennes du 19 ème et 20 ème siècle, en langue française et créole, véritables mozaïques linguistiques et stylistiques héritées de l'histoire tumultueuse d'Haïti.
Siècle(s) traité(s) : 19
Droits : Domaine public
Provenance : Ville de Pointe-à-Pitre. Réseau des bibliothèques
Permalien : http://www.manioc.org/patrimon/PAP11035
PAP11035

Éditeur(s) : HAL CCSD Public Library of Science
Résumé : International audience
Chaperone synthesis in response to proteotoxic stress is dependent on a family of transcription factors named heat shock factors (HSFs). The two main factors in this family, HSF1 and HSF2, are co-expressed in numerous tissues where they can interact and form heterotrimers in response to proteasome inhibition. HSF1 and HSF2 exhibit two alternative splicing isoforms, called α and β, which contribute to additional complexity in HSF transcriptional regulation, but remain poorly examined in the literature. In this work, we studied the transcriptional activity of HSF1 and HSF2 splicing isoforms transfected into immortalized Mouse Embryonic Fibroblasts (iMEFs) deleted for both Hsf1 and Hsf2, under normal conditions and after proteasome inhibition. We found that HSF1α is significantly more active than the β isoform after exposure to the proteasome inhibitor MG132. Furthermore, we clearly established that, while HSF2 had no transcriptional activity by itself, short β isoform of HSF2 exerts a negative role on HSF1β-dependent transactivation. To further assess the impact of HSF2β inhibition on HSF1 activity, we developed a mathematical modelling approach which revealed that the balance between each HSF isoform in the cell regulated the strength of the transcriptional response. Moreover, we found that cellular stress such as proteasome inhibition could regulate the splicing of Hsf2 mRNA. All together, our results suggest that relative amounts of each HSF1 and HSF2 isoforms quantitatively determine the cellular level of the proteotoxic stress response.
ISSN: 1932-6203

inserm-00814784
http://www.hal.inserm.fr/inserm-00814784
http://www.hal.inserm.fr/inserm-00814784/document
http://www.hal.inserm.fr/inserm-00814784/file/journal.pone.0056085.pdf
DOI : 10.1371/journal.pone.0056085

Éditeur(s) : Thonon-les-Bains : Société d'édition savoyarde

Droits : Domaine public
Provenance : Université de Nantes. Service commun de la documentation
Permalien : http://www.manioc.org/patrimon/NAN13047
NAN13047

Éditeur(s) : HAL CCSD American Geophysical Union
Résumé : International audience
The impact of stratospheric ozone on the tropospheric general circulation of theSouthern Hemisphere (SH) is examined with a set of chemistry‐climate models participatingin the Stratospheric Processes and their Role in Climate (SPARC)/Chemistry‐ClimateModel Validation project phase 2 (CCMVal‐2). Model integrations of both the past andfuture climates reveal the crucial role of stratospheric ozone in driving SH circulationchange: stronger ozone depletion in late spring generally leads to greater polewarddisplacement and intensification of the tropospheric midlatitude jet, and greater expansion ofthe SH Hadley cell in the summer. These circulation changes are systematic as polewarddisplacement of the jet is typically accompanied by intensification of the jet and expansion ofthe Hadley cell. Overall results are compared with coupled models participating in theIntergovernmental Panel on Climate Change Fourth Assessment Report (IPCC AR4), andpossible mechanisms are discussed. While the tropospheric circulation response appearsquasi‐linearly related to stratospheric ozone changes, the quantitative response to a givenforcing varies considerably from one model to another. This scatter partly results fromdifferences in model climatology. It is shown that poleward intensification of the westerly jetis generally stronger in models whose climatological jet is biased toward lower latitudes.This result is discussed in the context of quasi‐geostrophic zonal mean dynamics.
ISSN: 2169-897X

hal-00337060
https://hal.archives-ouvertes.fr/hal-00337060
https://hal.archives-ouvertes.fr/hal-00337060/document
https://hal.archives-ouvertes.fr/hal-00337060/file/Bock_et_al-2008-Journalsur Geophysical_Research__Solid_Earth_%281978-2012%29.pdf
DOI : 10.1029/2008JD010327

Éditeur(s) : HAL CCSD Oxford University Press (OUP)
Résumé : International audience
Ocean loading effects cause 3-D displacements large enough to affect space geodesy measurements either at the subdiurnal periods or at longer time scales by the means of spurious signals. GPS measurements, in turn, could provide local improvements of the models in coastal areas if their ability to precisely monitor such rapid displacements is assessed. In this paper, we use 105 days of continuous GPS measurements collected in 2004 in the French Brittany and Cotentin region to investigate: (1) the precision achieved by the GPS analysis on measuring 3-D subdiurnal displacements and amplitude and phase of the tidal constituents, (2) the quality of the most recent ocean tide model FES2004 in such a complex coastal context. Indeed, in this area, tide amplitudes are among the largest in the world (up to 16 cm of loading displacements on the vertical component) and are believed to show strong shallow-water tides. From a state of the art GPS analysis using the scientific GAMIT software over 2-h sessions, we test two independent strategies for the realization of the reference frame. The position time series are then compared with the displacements predicted by the FES2004 model applied on an elastic Earth model. The two sets of results are consistent with each other at the same level of agreement than with the predicted displacements, namely 3–5 mm on the horizontal components, 10 mm on the vertical. This assesses the capability of this technique for measuring 3-D ocean tide loading deformation. We validate the FES2004 model in the Brittany area, even though it slightly (2–7 mm) underestimates the three components amplitudes. With a harmonic analysis of the observed position time series, we obtain nevertheless an agreement at a submillimetre level for the M2, N2, O1, Q1 tidal constituents and at a millimetre level for the K1 and S2 tidal constituents. Moreover, we can extract a significant M4 load signal at the 95 per cent confidence level from the GPS time series at the stations located in the Mont St Michel area. The detection of other shallow-water constituents would be helpful to understand the amplitude deficit between the FES2004 predicted and GPS observed displacements.
ISSN: 0956-540X

insu-00335909
https://hal-insu.archives-ouvertes.fr/insu-00335909
https://hal-insu.archives-ouvertes.fr/insu-00335909/document
https://hal-insu.archives-ouvertes.fr/insu-00335909/file/Vergnolle_GJI_08_revised.pdf
DOI : 10.1111/j.1365-246X.2008.03734.x

Éditeur(s) : Paris : Berger-Levrault et cie
Siècle(s) traité(s) : 19
Provenance : Archives départementales de Guadeloupe
Permalien : http://www.manioc.org/patrimon/ADG18184
ADG18184

Éditeur(s) : HAL CCSD Wiley
Résumé : International audience
ISSN: 0035-9009

hal-00372548
https://hal.archives-ouvertes.fr/hal-00372548
DOI : 10.1002/qj.386

Éditeur(s) : Paris : Lamy
Siècle(s) traité(s) : 18
Droits : Domaine public
Provenance : Collectivité territoriale de Martinique. Bibliothèque Schoelcher
Permalien : http://www.manioc.org/patrimon/SCH13192
SCH13192

Éditeur(s) : Paris : Jean Crès
Siècle(s) traité(s) : 19
Droits : Domaine public
Provenance : Ville de Pointe-à-Pitre. Réseau des bibliothèques
Permalien : http://www.manioc.org/patrimon/PAP11032
PAP11032

Éditeur(s) : Paris : Pagnerre Editeur
Siècle(s) traité(s) : 19
Provenance : Archives départementales de Guadeloupe
Permalien : http://www.manioc.org/patrimon/ADG18121
ADG18121

Éditeur(s) : Cayenne : Imprimerie du gouvernement
Résumé : Année 1861
Siècle(s) traité(s) : 19
Droits : Domaine public
Provenance : Collectivité territoriale de Guyane. Bibliothèque Alexandre-Franconie
Permalien : http://www.manioc.org/patrimon/FRA11232
FRA11232

Éditeur(s) : Périgueux : Imprimerie commerciale et administrative
Siècle(s) traité(s) : 18
Droits : Domaine public
Provenance : Ville de Pointe-à-Pitre. Réseau des bibliothèques
Permalien : http://www.manioc.org/patrimon/PAP11057
PAP11057

Éditeur(s) : London : H. Colburn and R. Bentley
Siècle(s) traité(s) : 19
Droits : Domaine public
Provenance : Collectivité territoriale de Martinique. Bibliothèque Schoelcher
Permalien : http://www.manioc.org/patrimon/SCH13082
SCH13082

Éditeur(s) : Ministère de la marine et des colonies
Résumé : Description des plantes des colonies françaises.
Siècle(s) traité(s) : 18
Droits : Domaine public
Provenance : Fondation Clément
Permalien : http://www.manioc.org/patrimon/FCL18019
FCL18019

Éditeur(s) : Paris : Ernest Leroux
Résumé : Ouvrage couronné par l'Académie Française
Siècle(s) traité(s) : 18
Droits : Domaine public
Provenance : Archives territoriales de Guyane
Permalien : http://www.manioc.org/patrimon/GAD12010
GAD12010

Éditeur(s) : Paris : chez Jacques et Emmanuel Langlois
Siècle(s) traité(s) : 17
Droits : Domaine public
Provenance : Archives départementales de Guadeloupe
Permalien : http://www.manioc.org/patrimon/ADG17060
ADG17060

Éditeur(s) : Paris : Imprimerie brevetée Charles Blot
Siècle(s) traité(s) : 19
Droits : Domaine public
Provenance : Collectivité territoriale de Martinique. Bibliothèque Schoelcher
Permalien : http://www.manioc.org/patrimon/SCH13009
SCH13009

Éditeur(s) : Paris : Société d'éditions littéraires et artistiques
Résumé : 2° éd.
Siècle(s) traité(s) : 20
Provenance : Conseil départemental de la Guadeloupe. La Médiathèque Caraïbe
Permalien : http://www.manioc.org/patrimon/LAM18015
LAM18015