An environmental perspective of the post-tsunami scenario along the coast of Tamil Nadu, India: Role of sand dunes and forests

Mascarenhas, A.; Jayakumar, S.

doi:10.1016/j.jenvman.2007.01.053

Cited by 125 publications

(54 citation statements)

References 20 publications

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“…The author mentions that some models have suggested marked reduction in tsunami wave flow pressure for forests that are at least 100 m in width. Two papers have quantified the damage caused by the tsunami to mangroves in Andaman and Nicobar islands ( Two articles highlight the protective role of sand dunes against the tsunami (Mascarenhas andJayakumar 2007, Bhalla 2007). The former looks at inundation limits, run-up heights and measurement of cross-section profiles in 24 major locations along the coast from Chennai southwards for 350 km.…”

Section: Coastal Vegetation: Debates Over Their Protective Functionmentioning

confidence: 99%

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From Bathymetry to Bioshields: A Review of Post-Tsunami Ecological Research in India and its Implications for Policy

Mukherjee

Dahdouh‐Guebas

Kapoor

et al. 2010

Environmental Management

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More than half a decade has passed since the December 26th 2004 tsunami hit the Indian coast leaving a trail of ecological, economic and human destruction in its wake. We reviewed the coastal ecological research carried out in India in the light of the tsunami. In addition, we also briefly reviewed the ecological research in other tsunami affected countries in Asia namely Sri Lanka, Indonesia, Thailand and Maldives in order to provide a broader perspective of ecological research after tsunami. A basic search in ISI Web of Knowledge using keywords ''tsunami'' and ''India'' resulted in 127 peer reviewed journal articles, of which 39 articles were pertaining to ecological sciences. In comparison, Sri Lanka, Indonesia, Thailand and Maldives had, respectively, eight, four, 21 and two articles pertaining to ecology. In India, bioshields received the major share of scientific interest (14 out of 39) while only one study (each) was dedicated to corals, seagrasses, seaweeds and meiofauna, pointing to the paucity of research attention dedicated to these critical ecosystems. We noted that very few interdisciplinary studies looked at linkages between pure/applied sciences and the social sciences in India. In addition, there appears to be little correlation between the limited research that was done and its influence on policy in India. This review points to gap areas in ecological research in India and highlights the lessons learnt from research in other tsunami-affected countries. It also provides guidance on the links between science and policy that are required for effective coastal zone management.

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Section: Coastal Vegetation: Debates Over Their Protective Functionmentioning

confidence: 99%

“…Therefore, it evoked considerable interest in scientific circles within India regarding a range of coastal issues, which had hitherto not received adequate attention. Notable among them are topics pertaining to bioshields, sea walls, sand dunes and disaster mitigation (Bhalla 2007;Mascarenhas and Jayakumar 2008).…”

Section: Introductionmentioning

confidence: 99%

From Bathymetry to Bioshields: A Review of Post-Tsunami Ecological Research in India and its Implications for Policy

Mukherjee

Dahdouh‐Guebas

Kapoor

et al. 2010

Environmental Management

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“…En un periodo de 5 años y tras producirse dos nuevos tsunami en la costa chilena en 2014 y 2015 Catalán et al, 2015;Contreras-López et al, 2016), aún no existen obras de mitigación de tsunami en ninguno de los centros urbanos de la comuna. Esta desatención ignora el nivel protector ofrecido por las dunas (e.g., Mascarenhas & Jayakumar, 2008) ubicadas en las ZAV y la posibilidad de crear bosques de protección de tsunami (e.g., Irtem et al, 2009;Tanaka, 2012). Las obras de mitigación propuestas en esta línea por el PRES no tuvieron protagonismo en la cartera de proyectos, por lo que actualmente no existe en la comuna una estrategia a escala urbana de protección ante tsunamis.…”

Section: Discussionunclassified

Rehabilitacion de centros urbanos afectados por el tsunami 2010 en la Comuna de Pelluhue, Chile

Igualt¹,

Breuer²,

Winckler³

et al. 2017

lajar

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RESUMEN. La Comuna de Pelluhue fue una de las más afectadas durante el terremoto y tsunami del 27 de febrero de 2010 en Chile central, registrando 47 fallecidos, el mayor número de muertes per-cápita del país. Este estudio se orienta a analizar la resiliencia de los centros urbanos de la comuna, desde sus principales instancias: preparación, resistencia, recuperación y adaptación. Los daños generados por el tsunami se estudian mediante un levantamiento in-situ, complementado con levantamientos efectuados en 2013 y 2015, consulta de percepción de seguridad y un análisis del impacto de los instrumentos de planificación territorial en la rehabilitación de los centros urbanos. De estos estudios se concluye que la comuna experimentó una rápida recuperación de infraestructura entre 2010 y 2012. Las modificaciones incorporadas en la ordenanza del Plan Regulador Comunal a finales de 2012 promovieron el uso de una nueva tipología estructural adaptada al riesgo de tsunami en la Zona Turística de Borde Costero (ZTBC-1). El uso de marcos estructurales de madera y hormigón en el primer piso, se adoptó en respuesta al bajo coeficiente de ocupación de suelo sugerido en la ordenanza del Plan Regulador Comunal para dicha zona, sin necesariamente cumplir con criterios de diseño estructural. En otras zonas ubicadas en el área inundada, no obstante, se reconstruyó sin adoptar criterios de adaptación. Aun cuando se implementó una consulta, que no tiene la representación adecuada de toda la población, el sondeo indica que el plan de emergencia implementado por ONEMI, por su parte, generó una mejor percepción de seguridad en las zonas de riesgo por parte de los residentes, pero los visitantes desconocen las medidas de evacuación vigentes. Palabras clave: rehabilitación urbana, resiliencia, adaptación, levantamiento post-tsunami, zonificación, percepción de seguridad. Coastal settlements rehabilitation affected by the 2010 tsunami in PelluhueCounty, Chile ABSTRACT. The Pelluhue country was one of the most affected during the earthquake and tsunami of February 27, 2010 in central Chile, with 47 deaths, the highest number of per-capita deaths in the country. This study is oriented to analyze the resilience of the urban centers of the commune, from its principal instances: preparation, resistance, recovery and adaptation. The damage generated by the tsunami is studied through an on-site survey, supplemented by surveys conducted in 2013 and 2015, a safety perception consultation and an analysis of the impact of territorial planning instruments in the rehabilitation of urban centers. From these studies it is concluded that the commune experienced a rapid infrastructure recovery between 2010 and 2012. The modifications incorporated in the ordinance of the Community Regulatory Plan at the end of 2012 promoted the use of a new structural typology adapted to the tsunami risk in the Coastal Tourist Zone (ZTBC-1). The use of wood and concrete structural frames on the first floor was adopted in response to the low coefficient of soil occupation su...

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“…Coastal forests, including beach (and Casuarina) forests and mangrove forests in Thailand, play a vital role in affording protection against natural events such as storms and tsunamis 36 . From previous observations by Römer 25 , using remote sensing techniques to assess impacts on coastal forests in Phang Nga province, Casuarina forests were reported as being severely damaged by tsunami impacts (38% damaged), which is similar to damage reported here for BNK (45%) and KL (40%).…”

Section: Change Detection Of Beach Forest From 2003 To 2013mentioning

confidence: 99%

“…Furthermore, C. equisetifolia does well in competition with other vegetation, frequently existing as pure stands and sparse understory vegetation 26 . If sufficiently extensive, coastal vegetation can absorb enough of the tsunami energy, it would reduce the flow velocity and depth of the wave, but its effectiveness depends on the magnitude of the tsunami, as well as stand size, density, species composition, structure, and homogeneity 1,36 . Tanaka 33 suggested that the leading edge of the forest close to the sea should have dense vegetation such as a Pandanus-Casuarina belt.…”

Section: Change Detection Of Beach Forest From 2003 To 2013mentioning

confidence: 99%

Beach forest changes (2003–2013) in the tsunami-affected area of Phang Nga, Thailand from multi-temporal satellite data

Kongapai¹,

Sompongchaiyakul²,

Jitpraphai³

et al. 2016

ScienceAsia

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Beach forests are important ecological zones in many coastal regions. Many are under increasing anthropogenic and natural stress. Beach forest changes and their causes were examined in three tsunami-impacted sites with different land-use/cover (LULC): Ban Nam Khem (BNK, fishing village), Khao Lak (KL, tourist destination), and Thai Mueang (TM, part of a national park). Vegetation surveys, GIS, and interpretation of time series IKONOS and THEOS imagery using supervised classification (ENVI 4.7) from 2003-2013 were performed. Six beach forest tree and shrub species were found in BNK and KL, dominated by Casuarina equisetifolia, while 24 tree/shrub species, dominated by Syzygium grande, were observed at TM. After the tsunami, beach forests were severely damaged in BNK (45%), KL (40%), and TM (23%). Recovery of beach forests in 8 years varied from BNK (58%), KL (39%) with low rates in KL and high rates in TM (62%). Substantial portions of the three sites were still characterized as beach forest in 2013, though the forests now included areas that had recovered from the tsunami damage and/or altered LULC (e.g., barren land to beach forests and vice versa). Anthropogenic factors represented 40% (BNK), 56% (KL), and 5% (TM) of the changes with urbanization being a leading cause in tourist areas (KL; 24%). The study highlights the need for improved understanding of beach vegetation, tsunami impacts, and LULC to provide sustainable management of beach forests in Thailand in three sites with different anthropogenic characteristics.

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An environmental perspective of the post-tsunami scenario along the coast of Tamil Nadu, India: Role of sand dunes and forests

Cited by 125 publications

References 20 publications

From Bathymetry to Bioshields: A Review of Post-Tsunami Ecological Research in India and its Implications for Policy

From Bathymetry to Bioshields: A Review of Post-Tsunami Ecological Research in India and its Implications for Policy

Rehabilitacion de centros urbanos afectados por el tsunami 2010 en la Comuna de Pelluhue, Chile

Beach forest changes (2003–2013) in the tsunami-affected area of Phang Nga, Thailand from multi-temporal satellite data

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