Atmospheric Storm Triggered and Intensified by Geodynamics: Case Studies from Andaman Sea and Bay of Bengal Region in the Indian Ocean

Akilan, A.; Azeez, K.K. Abdul; Schuh, Harald

doi:10.1007/s00024-017-1530-1

Cited by 7 publications

(6 citation statements)

References 54 publications

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“…The mean value of ZTD in the close equatorial region is ~2600 mm [Jin et al 2007]. A significant change in ZTD was found during the occurrence of storms [Akilan et al 2015], and also during the occurrence of earthquake swarms in the Andaman region [Akilan et al 2017]. Akilan et al [2017] analyzed different cyclonic storms originated in the Andaman Sea and Bay of Bengal and concluded that the higher ZTD and subsequent cyclonic conditions are associated to the earth geodynamic processes in the Andaman-Sumatra subduction zone, namely magma upwelling and seismicity.…”

Section: Resultsmentioning

confidence: 99%

“…A significant change in ZTD was found during the occurrence of storms [Akilan et al 2015], and also during the occurrence of earthquake swarms in the Andaman region [Akilan et al 2017]. Akilan et al [2017] analyzed different cyclonic storms originated in the Andaman Sea and Bay of Bengal and concluded that the higher ZTD and subsequent cyclonic conditions are associated to the earth geodynamic processes in the Andaman-Sumatra subduction zone, namely magma upwelling and seismicity. The higher water vapor precipitated in the atmosphere over the region found to be moved to the coasts, controlled by the direction of the turbulent atmosphere conditions which slowly transformed into cyclones, and made landfall at the coastal location resulting in heavy rainfall [Akilan et al 2017].…”

Section: Resultsmentioning

confidence: 99%

“…Subaerial and submarine volcanoes occur along Sumatra and Andaman Islands and in their surroundings, which result from the ongoing subduction of the Indo-Australina plate under the Sunda plate [Walter and Amelung 2007]. Volcano-tectonic seismic events associated with the magma injections at the upper crustal depths and/or eruptions onto the ocean surface were identified in the Andaman region [Kundu et al 2012, Akilan et al 2017. The seismic swarm like events, particularly the M>5 earthquakes, occurred soon after the 2004 Sumatra event to the north of epicentre are possibly indicating sub-marine volcanic activity in the region [Walter and Amelung 2007].…”

Section: The 2004 Great Sumatra (Mw 90) Earthquakementioning

confidence: 99%

“…In addition to such noticeable changes on the earth, the earthquake phenomena also influence the dynamics of the overlying atmosphere with enhancement in atmospheric temperature [Tronin et al 2002, Pulinets et al 2006 and perturbation in the Total Electron Content (TEC) of the ionosphere [Calais and Minister 1995, Afraimovich et al 2001, Ducic et al 2003, Liu et al 2010, Catherine et al 2017. Recently, studies have also inferred notable changes in atmospheric water content connected to seismogenic processes [Akilan et al 2016[Akilan et al , 2017.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, GPS signals are analysed to study the Total Electron Content (TEC) over the ionosphere, one of the important parameters explaining the dynamics of the atmosphere, as the TEC is found to be a precursor for short-term earthquake prediction [Heki 2011]. Thus, the analysis of the GPS signals recorded on the earth surface has been widely and effectively used for identification and quantification of earth deformation, meteorological studies and changes in atmospheric parameters which are accompanying seismic events [Ouzounov 2011, Heki andEnomoto, 2013;Wang et al, 2013;Akilan et al, 2015;Catherine et al, 2017;Akilan et al 2017]. In this study, we evaluate the changes in atmospheric water content during the large magnitude (Mw 9.0) 26th of December, 2004, Sumatra earthquake in the Indian Ocean region and explore its possible link to the occurrence of heavy rainfall at the west coast of California (North America) in the month of January 2005.…”

Section: Introductionmentioning

confidence: 99%

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Temporal changes in atmospheric water content during the December 2004 Sumatra earthquake as estimated from GPS signals and its possible connection to the January 2005 California flash flood

Akilan

Azeez

Padhy

et al. 2018

Annals of Geophysics

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We studied the temporal change in Zenith Total Delay (ZTD) from the GPS signals received at sites around the epicentral region of the 26 December 2004 Great Sumatra earthquake (Mw 9.0). The estimated ZTD values at the nearest GPS locations available around the earthquake region showed a significant rise after the earthquake at locations to its east (~63mm at NTUS) and south (~110mm at COCO), but no changes were seen towards the west. The increase in ZTD (and thus precipitable water vapor, PWV) associated to the earthquake process is attributed to the thermal energy released through the earthquake process and the probable heat induced on to the ocean surface through the magma upwelling processes in the earthquake region, which all might have caused increase in ocean water temperature and catalyzed the evaporation process yielding high precipitation over the region. However, this high precipitation did not produce rainfall in its vicinity and appears to have moved to the California coast by the subtropical jet stream present over the region during this period. The southern California experienced a historical heavy rain from 28 th of December, 2004 to 12 th of January, 2005 and the El Niño conditions in the Pacific Ocean alone could not explain such an unusual high precipitation in the winter period. We conclude that the severe weather conditions over the Californian coast and resulting flash flood might have been caused by transport of high water vapor formed over the Sumatra earthquake epicentral region to the California coast by the subtropical jet stream movement from west to east.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: The 2004 Great Sumatra (Mw 90) Earthquakementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Temporal changes in atmospheric water content during the December 2004 Sumatra earthquake as estimated from GPS signals and its possible connection to the January 2005 California flash flood

Akilan

Azeez

Padhy

et al. 2018

Annals of Geophysics

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Source and Causes of 2015 Great Pluvial Flood of Chennai, Tamil Nadu and its Surroundings

Akilan

Balaji

Azeez

et al. 2017

Journal of the Geological Society of India

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A catastrophic heavy downpour was recorded in the month of November-December 2015 which devastated wealth, lives, disturbed the livelihood and regular activity of common man of Chennai city and its surroundings. Indian Metrological Department (IMD), Chennai warned the people in Chennai in advance about the atmospheric depression developed in the Indian Ocean region and moving towards Tamil Nadu coast. The Numerical Weather Modeling (NWM) retrieved parameters such as temperature and Zenith Total Delay (ZTD) along with the ISC earthquake catalog were analysed for the root cause of this phenomena and found a relation between the onset of the atmospheric weather change and the swarms of 8th to 9th November 2015 in the Indian Ocean region and associated thermal radiation. These swarms are generally associated with the submarine volcanic activity which released the thermal radiation from ocean floor that caused the ocean water to warm and evaporate. The consequence of incessant rainfall and the weather condition deviated from the normal climate and monsoon pattern. Thus, the abnormal and distinct weather condition that prevailed during the period has been triggered by the swarms in the north Sumatra oceanic region and the resultant effect was the great pluvial flood disaster in Chennai and its surroundings in November-December 2015.

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Correlating volcanic emissions from Andaman-Sumatra region to atmospheric pollution in Delhi: A possible scenario

Akilan¹,

Satyanarayanan²,

Balaji³

et al. 2023

Geosystems and Geoenvironment

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Atmospheric Storm Triggered and Intensified by Geodynamics: Case Studies from Andaman Sea and Bay of Bengal Region in the Indian Ocean

Cited by 7 publications

References 54 publications

Temporal changes in atmospheric water content during the December 2004 Sumatra earthquake as estimated from GPS signals and its possible connection to the January 2005 California flash flood

Temporal changes in atmospheric water content during the December 2004 Sumatra earthquake as estimated from GPS signals and its possible connection to the January 2005 California flash flood

Source and Causes of 2015 Great Pluvial Flood of Chennai, Tamil Nadu and its Surroundings

Correlating volcanic emissions from Andaman-Sumatra region to atmospheric pollution in Delhi: A possible scenario

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