(a) whether the Delhi region had a number of tremors in less than a month’s time recently ranging from 1.6 to 3 on Richter Scale;
(b) if so, the details thereof?
(c) whether the intensity of these tremors is considered dangerous;
(d) if so, the disaster management plans for the city to meet any eventuality; and
(e) if not, the steps taken by the Government in this regard?
THE MINISTER OF STATE (INDEPENDENT CHARGE) OF THE MINISTRY OF SCIENCE AND TECHNOLOGY AND MINISTER OF STATE (INDEPENDENT CHARGE) OF THE DEPARTMENT OF OCEAN DEVELOPMENT (SHRI KAPIL SIBAL)
(a) & (b): Yes Sir. During the period 18th March, 2004 to 21st April, 2004, Delhi region experienced nine tremors of magnitude ranging between 1.5 to 2.7 on Richter’s scale. The hypo central parameters of the tremors recorded during the period 18.3.04 to 11.6.04 are at annexure.
(c) The maximum intensity associated with an earthquake of magnitude 2.7 (on Richter Scale) is III on Modified Mercelli (MM) intensity scale. According to this scale, intensity III is not considered to be of any significance from damage point of view.
(d) & (e): The Government of NCT of Delhi has constituted a Delhi Disaster Management Authority under the Chairmanship of Lt. Governor of Delhi with representation from the relevant Departments/Agencies as well as the Union Home Ministry. The preparation of disaster management plans relating to earthquakes and other disasters is the responsibility of the government of NCT Delhi, which has informed that they are taking appropriate action in this regard.
ANNEXURE IN REPLY TO LOK SABHA’ S UNSTARRED QUESTION NO. 1906 FOR 21.7.2004 BY DR. P.P. KOYA REGARDING “ TREMORS IN DELHI REGIONâ€
Annexure-1
List of tremors in Delhi region with magnitude ranging between 1.5 to 2.7 from 18-03-2004 to 12-06-2004
Year MM DD HHMM Lat. Long. Dep. Mag. (IST) Deg.N Deg.E
2004 3 18 1323 28.63 77.25 15.3 2.7 2004 3 28 0951 28.63 77.15 15.3 1.6 2004 4 1 1102 28.63 77.18 10.0 1.5 2004 4 5 0618 28.70 77.36 20.1 1.8 2004 4 5 1134 28.69 77.32 20.9 1.9 2004 4 5 1522 28.68 77.36 18.2 1.6 2004 4 5 1756 28.78 77.21 9.0 2.0 2004 4 9 2220 28.61 77.15 10.8 1.6 2004 4 21 1111 28.65 77.14 6.2 1.9 2004 4 29 1721 28.57 77.09 13.5 1.7 2004 5 6 0636 28.43 77.37 19.6 1.5 2004 5 20 0754 28.76 77.00 2.5 1.8 2004 5 24 0419 28.63 77.13 15.0 2.0 2004 6 6 1108 28.62 77.00 15.4 2.1 2004 6 12 0023 28.45 77.36 15.9 1.8
Total number of tremors: 15