Variation in atmospheric ozone concentration following strong earthquakes

Ozone trends in the vertical structure of Upper Troposphere and Lower stratosphere over the Indian monsoon region

“…Increasing trends in tropospheric ozone residual (TOR) measurements over the Indian inland cities are reported by Kulkarni et al (2010). Ganguly (2009) also observed overall increasing ozone trends (1.2-7 %) over the Indian forests for the period 1980-2000. Using Ozone Mapping Instrument measurements Nishanth and Satheesh (2011) reported increasing ozone trends *8.8 %/year over the Indian coastal cities.…”

Anomalies of total column CO and O<sub>3</sub> associated with great earthquakes in recent years

“…The variations of ozone concentration after the earthquakes showed a similar trend. The ozone concentration was low on the day of the earthquake occurrence, increased gradually after the event and reached a maximum value and thereafter decreased to its normal value (Ganguly, 2009;Singh et al, 2007). In addition, increases of CO concentration deduced from Measurements of Pollution in the Troposphere (MOPITT) occurred prior to the 26 January 2001 Gujarat M s = 7.6 earthquake (Singh et al, 2010a), the 15 January 2001 Taiwan M s = 7.5 earthquake (Guo et al, 2006), the 6 June 2000 Jingtai M s = 5.9 earthquake in Gansu Province, northwestern China (Yao et al, 2005) and the M s = 6.9 earthquake of 8 June 2000 in northern Myanmar (Yao et al, 2005).…”

“…The experiments indicated that different igneous and metamorphic rocks produced Moreover, the anomaly of O 3 concentration can be caused by the transport of enriched-O 3 air from higher latitudes. Advection of gaseous compounds of nitrogen oxides (NO x ) from the neighboring high-pressure regions where the earthquake occurred and the atmospheric pressure is intensively low may contribute to the anomalies of O 3 concentration (Ganguly, 2009). Meanwhile, the heat energy can be transmitted from the surface to the upper layers during the process of earthquake activities in the region of low atmospheric pressure that was created by gravity waves (Pal, 2002).…”

“…The anomalous variations are considered as the new indicators for earthquake although the spatial resolution and sensitivity of the sensors are still low. For instance, variations of ozone concentration measured by Total Ozone Mapping Spectrometer (TOMS) and the Ozone Monitoring Instrument (OMI) were considered to be related with the earthquakes (Tronin, 2002;Ganguly, 2009). The variations of ozone concentration after the earthquakes showed a similar trend.…”

Anomalous Variations in Atmospheric Carbon Monoxide Associated with the Tsunami

“…Geologists maintained that there is no connection between weather and earthquakes. But several recent studies (Singh et al, 2010b;Ganguly, 2009) reported that changes in surface, atmosphere and gases like ozone are associated with earthquakes. Surface and air temperature, RH and surface latent heat flux changes showed complementary nature one day prior to the earthquake.…”