Programme Interreg IV Caraïbe Caribbean Environmental Satellite Information system Introduction Inventory Spatialisation Discussion The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts Conclusion By: Guillaume LALUBIE E.A. 929 : AIHP-GEODE Université des Antilles et de la Guyane Schœlcher, Martinique Thursday 21 March 2013 The Lesser Antilles: a volcanic arc issued from subduction The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts 12 volcanic islands 21 sub-aerial active volcanoes (9 in Dominica) Introduction Inventory Spatialisation Discussion Conclusion Guillaume Lalubie 7 eruptive centers since 1650 AD 22 phreatic or magmatic eruptions, with various magnitude whatever the type - What is the extend of volcanic hazards during historical eruption? - What are the impacts of volcanic eruptions on the Caribbean society? Atlas made in three stages The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts 1- Make an inventory of historical eruptive hazards substantiated by original documents : historical works and scientific literature 2- Create a database: the BDLAVI (Lesser Antilles Volcanic Impacts), with date, phenomena, impacts and main reactions Introduction Inventory Spatialisation Discussion Conclusion Guillaume Lalubie 3- Constitute an atlas with the spatialisation of physical volcanic impacts (primary or secondary phenomena) and human volcanic impacts (individual, institutional and scientific) Inventory of historical volcanic activities 73 volcanic events were listed from volcano-seismic crisis to paroxysmic magmatic eruption The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts Soufrière de Guadeloupe, 1836 phreatic eruption Soufriere Hill, on-going eruption Soufrière of Saint Vincent, 1971 magmatic eruption Introduction Inventory Spatialisation Montagne Pelée, 8 May 1902, 08h00 (North view) Discussion Conclusion Soufrière de Guadeloupe, 1898, fumarolic increases Montagne Pelée, Saint-Pierre, the 7, 9 et 20 May 1902 Guillaume Lalubie 7 May 1902 9 May 1902 20 May 1902 List the secondary phenomena : 1902 lahars on Montagne Pelée The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts Many destructive lahars with different triggering mechanisms Tsunami, 5 May 1902, Saint-Pierre,1 fatality, after crater lake expulsion Heavy rain (or landslide?), 8 May 1902, 400 fatalities Heavy rain, May-September 1902 Introduction Inventory Spatialisation Discussion Heavy rain, May-September 1902 Hot lahars, 1902-1903 Conclusion Guillaume Lalubie Before Crater lake expulsion: 5 May 1902, 23 fatalities After List the human impacts of the historical eruptions The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts After the 1902 disaster, crisis management was more or less successful in Martinique Rescue isolated inhabitants (Le Prêcheur) Migration on the roads after each paroxysm Introduction Inventory Spatialisation Discussion Conclusion Refugee camp (Fond Lahaye) Guillaume Lalubie Mobilization of the French scientific team (Lacroix, Giraud, Food distributions to the disaster Rollet de l’Isle, June 1902) victims (Fort-de-France) An atlas with a homogeneous semiologic code The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts Introduction Inventory Spatialisation Discussion Conclusion Guillaume Lalubie The spatialisation of physical and human impacts of eruptions in the Lesser Antilles 100 maps were produced for 24 volcanic manifestations The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts Saint Kitts, Mount Liamuiga, 1692 Montserrat, Soufrière Hills, 12/25/1997, Boxing day! Guadeloupe, Soufrière, Beginning November 1976 Dominica, Valley of Desolation, 01/04/1880 Introduction Inventory Spatialisation Discussion Conclusion Guillaume Lalubie Martinique, Montagne Pelée, 20/05/1902 Sainte Lucia, Soufrière Volcanic Centre, 1766 Saint Vincent, The Soufrière, 04/14/1979 A dynamic mapping Diversity in the evolution and the dynamism during eruptive crises Martinique, Montagne Pelée, 1902 The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts Saint Vincent, The Soufrière, 1979 Introduction Guadeloupe, La Soufrière, 1976 Inventory Spatialisation Discussion Conclusion Guillaume Lalubie Montserrat, Soufrière Hills, 1995-on going Volcanic impacts on a regional scale The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts Regional physical impacts were essentially tsunami and ashfall. Today! s modern society would be adversly affected (fishing fleet, aerial transport, school activity, vulnerable persons, etc.) Montserrat, Soufrière Hills, 1999-2001 Martinique, Montagne Pelée, 8 May 1902, 08h00 AM Saint Vincent, The Soufrière, 1718 30 August 1902, 8h45 PM 7 May 1902,2h00 PM Introduction Inventory Spatialisation Discussion Conclusion Guillaume Lalubie 11 Febuary 2010, 11h52 AM Five stages of volcanic impact intensity The five stages listed by increasing order of intensity The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts 1- Precursors stage (with volcano-seismic activity and fumarolic increases 4 - Magmatic stage (with pyroclastic deposits channelled) Introduction Inventory Spatialisation Discussion 2 - Phreatic stage 5 - Magmatic paroxysmic stage Conclusion Guillaume Lalubie 3 - Phreatic paroxysmic stage or phreato-magmatic stage (same impact intensity) To understand the relationship between hazard intensities and the reactions of the population or institutions The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts Introduction Inventory Spatialisation Discussion Conclusion Guillaume Lalubie Some behaviours evolve while others remain constant: - for the authorities, the precautionary principle was born on Montagne Pelée, the 30 August 1902 - for the entire region, spontaneous evacuation starts when the first ash falls Eruptive impacts on the scale of the Lesser Antilles - Area destroyed by volcanic activity constitutes a small surface of volcanic islands over 360 years The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts - Roseau (Dominica) and Basse-Terre (Guadeloupe) are the last two towns most exposed to volcanic risk. They will probably suffer the same fate as Saint-Pierre (Martinique) in 1902 and Plymouth (Montserrat) in 1997 - Magmatic activity represents 14 % of all volcanic activity. The hydro-volcanogeomorphologic (HVG) system was sollicited for numerous historical volcanic activities Introduction Inventory Spatialisation Discussion Conclusion Guillaume Lalubie Modified from Roobol & Smith, 1989, after Lindsay et al., 2005 The different types of streams in the Lesser Antilles The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts Introduction Inventory Spatialisation Discussion Conclusion Guillaume Lalubie In 1902, the traumatism caused by the destruction of Saint-Pierre and the 28,000 victims, but also the fascination for the events from the crater, contributed towards the magmatic threats eclipsing some of other hazards (flashfloods, hydro-volcano-geomorphologic phenomena, tsunami, etc.). We consider that, with respect to volcanoes, the hydro-volcanogeomorphologic (HVG) threat is most significant because it is frequent, spontaneous and cannot always be predicted, during and between eruptions To identify 3 types of torrents in the Lesser Antilles - Major volcanic torrent - Secondary volcanic torrent - Non-volcanic torrent Most hydro-volcanogeomorphologic (HVG) hazards occur in major volcanic torrents. It is important to identify the most threatening torrents. The perception of natural hazards in the Lesser Antilles by the Amerindian Kalinago The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts Introduction All regional hazards are considered, except for the volcanic hazards (Breton, 1665). The Kalinago vocabulary describes the different intensities of torrential flows. Inventory Spatialisation Discussion Conclusion Guillaume Lalubie Volcanic risk was not a concern when compared to hydrological phenomena. The Kalinago society probably perceived volcanoes on a different time scale than ours: a time scale suited to the hazard impacts, their threats. Conclusion The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts Introduction Inventory Is the volcanic risk in the Caribbean overestimated ? Certainly not, if we consider the areas exposed to volcanic activity (Lindsay et al., 2005) Spatialisation Discussion Conclusion Guillaume Lalubie In the Lesser Antilles, the volcanic risk is very well monitored by 3 volcano observatories and the Seismic Research Unit, University of West Indies (Trinidad) However, in the context of an increasing demography, the hydro-volcano-geomorphology problematic will be considered more attentively, especially since it concerns flat surfaces with rich soils, which are favourable to human settlements Principale bibliographie The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts Boudon G., Le Friant A., Villemant B., Viodé J.P., 2005. Martinique. In: Lindsay J.M., Robertson R.E.A., Shepherd J.B., Shahiba A. (Eds.), Volcanic atlas of the lesser Antilles, Trinidad et Tobago, Seismic Research Unit, UWI: 127-146. Komorowski, J.C., Boudon, G., Semet, M., Beauducel, F., Antenor-Habazac, C., Bazin, S., Hammouya, G., Cheminée, J.L., 2005. Guadeloupe. In: Lindsay J.M., Robertson R.E.A., Shepherd J.B., Shahiba A. (Eds.), Volcanic atlas of the lesser Antilles, Trinidad et Tobago, Seismic Research Unit, UWI: 67-104. Lalubie G., 2012. Atlas des éruptions historiques aux Petites Antilles: inventaire et spatialisation des impacts physiques et humains. Rapport IRD/UMR Espace-Dev, Projet Interreg Caraïbes, CARIBSAT, 65 p. + 100 cartes. (caribsat.teledetection.fr) Introduction Lalubie G., 2013. Volcanic hydro-geomorphology and the rediscovery of an ancestral (Carib, Kalinago) problematic in the Lesser Antilles: the case of the Montagne Pelée. Bulletin de la Société Géologique de France, 184 (1), 135-141. Inventory Lindsay J.M., Robertson R.E.A., Shepherd J.B., Shahiba A. (Eds.), 2005. Volcanic atlas of the Lesser Antilles. St-Augustine, Trinidad and Tobago. Seismic Research Unit of the University of the West Indies: 279 p. Spatialisation Lindsay J.M., Smith A.L., Roobol M.J., Stasiuk M.V., 2005. Dominica. In: Lindsay J.M., Robertson R.E.A., Shepherd J.B., Shahiba A. (Eds.), Volcanic atlas of the lesser Antilles, Trinidad et Tobago, Seismic Research Unit, UWI: 1-47. Discussion Conclusion Lindsay J.M., 2005. Saint Lucia. In: Lindsay J.M., Robertson R.E.A., Shepherd J.B., Shahiba A. (Eds.), Volcanic atlas of the lesser Antilles, Trinidad et Tobago, Seismic Research Unit, UWI: 218-238. Robertson R.E.A., 2005. St. Kitts. In: Lindsay J.M., Robertson R.E.A., Shepherd J.B., Shahiba A. (Eds.), Volcanic atlas of the lesser Antilles, Trinidad et Tobago, Seismic Research Unit, UWI: 205-217. Robertson R.E.A., 2005. Saint Vincent. In: Lindsay J.M., Robertson R.E.A., Shepherd J.B., Shahiba A. (Eds.), Volcanic atlas of the lesser Antilles, Trinidad et Tobago, Seismic Research Unit, UWI: 241-261. Roobol M.J., Smith A.L., 1989. Volcanic and associated hazards in the Lesser Antilles. In: Latter J. H. (Ed.), Volcanic Hazards, Assessment and Monitoring, Berlin Heidelberg, Springer-Verlag, 57-85. Shepherd J.B., 1989. Eruption, eruption precursors and related phenomena in the Lesser Antilles. In: Latter, J. H. (Ed.), Volcanic Hazards, Assessment and Monitoring, Berlin Heidelberg, Springer-Verlag: 292-311. Guillaume Lalubie Smith A.L., Roobol M.J., 2005. Saba. In: Lindsay J.M., Robertson R.E.A., Shepherd J.B., Shahiba A. (Eds.), Volcanic atlas of the lesser Antilles, Trinidad et Tobago, Seismic Research Unit, UWI: 180-190. Smith A.L., Roobol M.J., 2005. St. Eustatius. In: Lindsay J.M., Robertson R.E.A., Shepherd J.B., Shahiba A. (Eds.), Volcanic atlas of the lesser Antilles, Trinidad et Tobago, Seismic Research Unit, UWI: 192-202. Programme Interreg IV Caraïbe Caribbean Environmental Satellite Information system Introduction Inventory Spatialisation Discussion Conclusion The historical eruptions in the Lesser Antilles: the inventory and the spatialisation of physical and human impacts Thank you for your attention [email protected] By: Guillaume LALUBIE E.A. 929 : AIHP-GEODE Université des Antilles et de la Guyane Schœlcher, Martinique Thursday 21 March 2013
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