Background
Kolvankar, Vinayak Ganpatrao was born on August 26, 1948 in Mumbai. Son of Ganpatrao Chintaman and Sushila Ganpatrao Kolvankar.
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Vinayak Ganpatrao Kolvankar
Edit ProfileEducation
Bachelor of Science, Parle Tilak Vidyalaya, Vile Parle, Mumbai, 1964. Degree, Institute Electronic & Telecommunications Engineers, New Delhi, 1971.
Career
Chief designer, radio telemetered seismic network Bhabha Atomic Research Center, Mumbai, science officer c, 1972—1977, science officer d, 1977—1983, science officer e, 1983—1989, science officer f, 1989—1996, science officer g, 1996—2001, science officer h, 2001—2007, science officer h+, since 2007, head seismic instrumentation. Consultant seismic instrumentation United Nations Educational, Manila, 1977.
Achievements
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In recent years we explored the roles of Sun and Moon on the occurrence of earthquakes. I am providing herewith our paper on "Sun Moon and Earthquakes" which provides direct relation of the positions of Sun and Moon to the occurrence of over 99% of earthquakes [magnitude 2-10].
For completeness I also provide details of other papers leading to this finding.
As a 7th plan project, we took up a research project to establish a radio telemetered seismic network [RTSN] at Bhatsa in state of Maharashtra, India. This RTSN was built with indigenous know-how.
During the operation of this network between 1988-1995, this network recorded an earthquake sequence from Valsad, Gujrat area in 1991. This network also experienced good amount of RF disturbance associated with this earthquake sequence. The details of this RF disturbance are provided in a file.
It was noticed that this RF disturbance contains some diurnal and semi-diurnal patterns and the semi-diurnal pattern was compared with other six examples of similar pattern reported by other researchers and then it was concluded that these disturbances was caused by Sun positions.
We also checked the Diurnal seismicity utilizing world earthquake data-set 1973-2008 from NEIC USGS. The pattern of these world earthquakes utilizing local time was found to be inversely proportional to daily temperature pattern. This was found to be governed by the horizontal component of geo-magnetic field which is susceptible to the temperature. [IGU2010.pdf]
To check the effect of Moon on seismicity, we realigned the world earthquake data [1973-2008] to different periodicities of Moon and found that more events taking place at perigee than at apogee, at full moon and at certain moon positions.
The combined effect of Sun and Moon which also provides earth tides along with oceanic tides, was discussed in detail in our paper "Earth tides and Earthquakes". Higher earthquake counts were witnessed at full moon. However small earthquakes at shallow focus range were found to be triggered by combined pull from Sun and Moon at New Moon phase
As an outcome of the paper on "Earth tides and Earthquakes" we witnessed a straight line relationship between Sun position [or GMT timings] and [EMD and SEM] of the world earthquakes. [EMD stands distance from earthquake location - Moon footprint on earth (can be expressed in angle as well) and SEM stands for Sun-Earth-Moon angle, which varies from 00 degrees to 360 degrees from new moon to the next new moon]. The study related to this finding is discussed in detail [SUNMOONEQR.pdf]. It was found that over 99% of the world earthquakes of magnitude 2.0 and above, is govern by this relationship.
It is this paper which is important from the point of view as to how Sun and Moon govern the total world earthquakes. It is necessary to find the physics behind this relations ship of GMT Vs [EMD+SEM] for all world earthquakes.
Works
Connections
Married Vaishali Vinayak Usha, December 16, 1973. Children: Amit Vinayak, Rakhi Rahul Kesarkar.
