Do inverted depositional sequences and allochthonous foraminifers in sediments along the Coast of Kachchh, NW India, indicate palaeostorm and/or tsunami effects?

Nigam, R.; Chaturvedi, Subodh Kumar

doi:10.1007/s00367-005-0014-y

Cited by 26 publications

(17 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the recent coast of Kachchh high-energy wave events, which are capable of eroding sediments in relatively deep water and re-depositing these in shallow water, are caused by tsunamis and tropical cyclones (Nigam and Chaturvedi, 2006). Both processes result in a mixing of skeletal components representing different environments and can form vast shell beds (Kortekaas and Dawson, 2007;Donato et al, 2008).…”

Section: Origin Of Event Deposits: Tempestite Versus Tsunamitementioning

confidence: 99%

Cyclone trends constrain monsoon variability during late Oligocene sea level highstands (Kachchh Basin, NW India)

et al. 2013

View full text Add to dashboard Cite

Climate change has an unknown impact on tropical cyclones and the Asian monsoon. Herein we present a sequence of fossil shell beds from the shallow-marine Maniyara Fort Formation (Kachcch Basin) as a recorder of tropical cyclone activity along the NW Indian coast during the late Oligocene warming period (~ 27–24 Ma). Proxy data providing information about the atmospheric circulation dynamics over the Indian subcontinent at this time are important since it corresponds to a major climate reorganization in Asia that ends up with the establishment of the modern Asian monsoon system at the Oligocene–Miocene boundary. The vast shell concentrations are comprised of a mixture of parautochthonous and allochthonous assemblages indicating storm-generated sediment transport from deeper to shallow water during third-order sea level highstands. Three distinct skeletal assemblages were distinguished, each recording a relative storm wave base. (1) A shallow storm wave base is shown by nearshore molluscs, reef corals and Clypeaster echinoids; (2) an intermediate storm wave base depth is indicated by lepidocyclinid foraminifers, Eupatagus echinoids and corallinacean algae; and (3) a deep storm wave base is represented by an Amussiopecten bivalve-Schizaster echinoid assemblage. These wave base depth estimates were used for the reconstruction of long-term tropical storm intensity during the late Oligocene. The development and intensification of cyclones over the recent Arabian Sea is primarily limited by the atmospheric monsoon circulation and strength of the associated vertical wind shear. Therefore, since the topographic boundary conditions for the Indian monsoon already existed in the late Oligocene, the reconstructed long-term cyclone trends were interpreted to reflect monsoon variability during the initiation of the Asian monsoon system. Our results imply an active monsoon over the Eastern Tethys at ~ 26 Ma followed by a period of monsoon weakening during the peak of the late Oligocene global warming (~ 24 Ma)

show abstract

Section: Origin Of Event Deposits: Tempestite Versus Tsunamitementioning

confidence: 99%

Cyclone trends constrain monsoon variability during late Oligocene sea level highstands (Kachchh Basin, NW India)

et al. 2013

View full text Add to dashboard Cite

show abstract

“…For instance, Ramachandran and others' (2005) article is perhaps the only study which compares field observations in both pre-and post-tsunami scenarios. Interestingly, some articles focused on the occurrence of paleo-tsunamis after the occurrence of the December 2004 tsunami (Nigam and Chaturvedi 2006), but they have not been included in this analysis.…”

Section: Year Publishedmentioning

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

View full text Add to dashboard Cite

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.

show abstract

“…The transport of foraminiferal species from deeper regions to the coastal regions in other areas has been reported by Dominey-Howes et al (1999) (Western Australia); Hindson et al (1999) (Algrave, Portugal); Fujiwara et al (2000) (Southern Kanto region, Pacific coast of Central Japan); Luque et al (2002) (Bay of Cadiz, Spain); Ruiz et al (2004) (Doñana National Park, SW Spain); Nagendra et al (2005) (SE coast of India); Hussain et al (2006), Malik et al (2006) (Andaman Islands, Indian Ocean); Nigam and Chaturvedi (2006) (NE Arabian sea); Hawkes et al (2007), Jankaew et al (2008) (Malaysia-Thailand Peninsula) and Smedile et al (2007) (Eastern Sicily, Italy).…”

mentioning

confidence: 85%

Ostracoda as an aid in identifying 2004 tsunami sediments: a report from SE coast of India

2010

View full text Add to dashboard Cite

Four short core samples were collected from the creek, estuarine regions of southeast (SE) coast of India affected by the 2004 Asian Tsunami. The study is aimed to signify the importance of ostracoda species in identifying major natural events (e.g. Tsunamis) in the coastal regions. The presence of many marine ostracoda species in the beach areas and the comparative studies with earlier reports from SE coast indicate that these species were brought by the high-energy tsunami waves. The depositional feature of ostracoda species in the beach and estuarine region also infers on the nature and force of tsunami waves in a particular region. The results clearly support that microfossils can be used to identify the major natural events close to coastal regions.

show abstract

Do inverted depositional sequences and allochthonous foraminifers in sediments along the Coast of Kachchh, NW India, indicate palaeostorm and/or tsunami effects?

Cited by 26 publications

References 19 publications

Cyclone trends constrain monsoon variability during late Oligocene sea level highstands (Kachchh Basin, NW India)

Cyclone trends constrain monsoon variability during late Oligocene sea level highstands (Kachchh Basin, NW India)

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

Ostracoda as an aid in identifying 2004 tsunami sediments: a report from SE coast of India

Contact Info

Product

Resources

About