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VOLUME 22, ISSUE 2 | MARCH 2018 251 Journal of Indian Geophysical Union Indian Geophysical Union Editorial Board Executive Council Chief Editor President P.R. Reddy (Geosciences), Hyderabad Prof. Shailesh Nayak, Distinguished Scientist, MoES, New Delhi Associate Editors Vice-Presidents B.V.S. Murthy (Exploration Geophysics), Hyderabad Dr. Satheesh C. Shenoi, Director, INCOIS, Hyderabad D. Srinagesh (Seismology), Hyderabad Prof. Talat Ahmad, VC, JMI, New Delhi Nandini Nagarajan (Geomagnetism & MT), Hyderabad Dr. V.M. Tiwari, Director, CSIR-NGRI, Hyderabad M.R.K. Prabhakara Rao (Ground Water Geophysics), Hyderabad Dr. Sunil K. Singh, Director, CSIR-NIO, Goa Editorial Team Hon. Secretary Solid Earth Geosciences: Dr. Kalachand Sain, CSIR-NGRI, Hyderabad Vineet Gahlaut (Seismology), New Delhi B. Venkateswara Rao (Water resources Management), Hyderabad Joint Secretary N.V. Chalapathi Rao (Geology, Geochemistry & Geochronology), Varanasi Dr. O.P. Mishra, MoES, New Delhi V.V. Sesha Sai (Geology & Geochemistry), Hyderabad Marine Geosciences: K.S.R. Murthy (Marine Geophysics), Visakhapatnam Org. Secretary M.V. Ramana (Marine Geophysics), Goa Dr. ASSSRS Prasad, CSIR-NGRI, Hyderabad Rajiv Nigam (Marine Geology), Goa Atmospheric and Space Sciences: Treasurer Ajit Tyagi (Atmospheric Technology), New Delhi Md. Rafique Attar, CSIR-NGRI, Hyderabad Umesh Kulshrestha (Atmospheric Sciences), New Delhi P. Sanjeeva Rao (Agrometeorology & Climatoplogy), New Delhi U.S. De (Meteorology), Pune Members Archana Bhattacharya (Space Sciences), Mumbai Prof. Rima Chatterjee, ISM, Dhanbad Editorial Advisory Committee: Prof. P. Rama Rao, Andhra Univ., Visakhapatnam Walter D Mooney (Seismology & Natural Hazards), USA Prof. S.S. Teotia, Kurukshetra Univ., Kurukshetra Manik Talwani (Marine Geosciences), USA Mr. V. Rama Murty, GSI, Hyderabad T.M. Mahadevan (Deep Continental Studies & Mineral Exploration), Ernakulum D.N. Avasthi (Petroleum Geophysics), New Delhi Prof. B. Madhusudan Rao, Osmania Univ., Hyderabad Larry D Brown (Atmospheric Sciences & Seismology), USA Prof. R.K. Mall, BHU, Varanasi Alfred Kroener (Geochronology & Geology), Germany Dr. A.K. Chaturvedi, AMD, Hyderabad Irina Artemieva (Lithospheric Structure), Denmark Mr. Sanjay Jha, Omni Info, NOIDA R.N. Singh (Theoretical& Environmental Geophysics), Ahmedabad Mr. P.H. Mane, ONGC, Mumbai Rufus D Catchings (Near Surface Geophysics), USA Surjalal Sharma (Atmospheric Sciences), USA Dr. Rahul Dasgupta, OIL, NOIDA H.J. Kumpel (Geosciences, App.Geophyscis, Theory of Poroelasticity), Germany Dr. M. Ravi Kumar, ISR, Gujarat Saulwood Lin (Oceanography), Taiwan Prof. Surjalal Sharma, Univ. of Maryland, USA Jong-Hwa Chun (Petroleum Geosciences), South Korea Dr. P. Sanjeeva Rao, Advisor, SERB, DST, New Delhi Xiujuan Wang (Marine Geology & Environment), China Dr. N. Satyavani, CSIR-NGRI, Hyderabad Jiro Nagao (Marine Energy and Environment), Japan Prof. Devesh Walia, North Eastern Hills Univ., Shillong Information & Communication: B.M. Khanna (Library Sciences), Hyderabad EDITORIAL OFFICE Indian Geophysical Union, NGRI Campus, Uppal Road, Hyderabad- 500 007 Telephone: +91 -40-27012799; 27012734; Telefax:+91-04-27171564 E. mail: [email protected], website: www.j-igu.in The Open Access Journal with six issues in a year publishes articles covering Solid Earth Geosciences; Marine Geosciences; and Atmospheric, Space and Planetary Sciences. Annual Subscription Individual ` 1000 per issue and Institutional ` 5000 for six issues Payments should be sent by DD drawn in favour of “The Treasurer, Indian Geophysical Union”, payable at Hyderabad, Money Transfer/NEFT/RTGS (Inter-Bank Transfer), Treasurer, Indian Geophysical Union, State Bank of India, Habsiguda Branch, Habsiguda, Uppal Road, Hyderabad- 500 007 A/C: 52191021424, IFSC Code: SBIN0020087, MICR Code: 500002318, SWIFT Code: SBININBBHO9. For correspondence, please contact, Hon. Secretary, Indian Geophysical Union, NGRI Campus, Uppal Road, Hyderabad - 500 007, India; Email: [email protected]; Ph: 040 27012799, 272012734 ISSN: 0257-7968 (Clarivate Analytics) ISSN: 0971-9709 (NISCAIR) Approved as bimonthly ESCI journal by Clarivate Analytics Cited in Indian Citation Index (ICI), New Delhi UGC Approved Journal (UGC Indexed No: 49066) Evaluated by NISCAIR, New Delhi CONTENTS Editorial S No. Title Authors Pg. No: 1 Critical study on P- and S-waves radiation and Ajit De 121 computation of earthquake magnitude due to simple crack models 2 Stress Orientation from Image log and Rima Chatterjee and Dip Kumar Singha 128 Estimation of Shear Wave Velocity using Multiple Regression Model: A Case Study from Krishna-Godavari basin, India 3 Wavefield decomposition of multi-component N.Satyavani, M. Ravi Kumar and 138 OBS data to enhance the seismic signal Kalachand Sain 4 Fractal Revaluation of Bottom Depth of Levi I. Nwankwo, Peter I. Olasehinde, 143 Magnetic Sources in Bida Basin, Nigeria from and Abayomi J. Sunday High-Resolution Aeromagnetic Data 5 Forecasting Aftershocks of Major Earthquakes Vinod Kumar and M. Satya kumar 151 6 Hydrogeological and Geophysical B.Venkateswara Rao 163 Characteristics of Northern Parts of Eastern Ghat Khondalitic Aquifers 7 Geochemical and Ore-mineralogical M. Jagannadha Rao, J. VenkataRamana, 171 Characterization of Beach placer Ilmenite from Aaron A. Jaya Raj, G. Raja Rao and P. Srikurmam Deposit, Andhra Pradesh, India Rajesh 8 Ferrosyenites - an overview K. Sai Krishna and R. Mallikarjuna Reddy 178 9 Punugodu Granite Pluton, Nellore Schist Belt, Ch. Narshimha, U.V.B. Reddy, V.V. Sesha 187 Eastern Dharwar Craton, Se India Sai and K.S.V. Subramanyam 10 Long range forecast and development of a Onkari Prasad, O. P. Singh and K.Prasad 198 Weak southwest monsoon during 2017- pt. I: long range forecast 11 Defluoridation of water using Mentha V.Sunitha and B.Muralidhara Reddy 207 longifolia (Mint) as Bioadsorbent 12 Feasible Mitigation Options for Air Pollution Kopal Verma and Umesh Kulshrestha 212 and Traffic Congestion in Metro Cities 13 Probing Chemical Heterogeneity of the Mantle Seema Kumari and Debajyoti Paul 219 Using Open System Isotopic Models of the Silicate Earth 14 Dynamics of drought and present status of P.R.Reddy 222 drought prediction- an overview. News at a glance 233 Book Review: Proterozoic Orogens of India- A P.R.Reddy 237 critical window to Gondwana by T.R.K. Chetty 15 Short-Term Advanced Warning from Some Indra N. Gupta, B.K. Rastogi and 241 Large Earthquakes- A Research Initiative. Robert A. Wagner 54th Annual Convention of Indian Geophysical K.Sain and ASSSRS.Prasad 247 Union (IGU): A Report This is an open access Journal. One can freely download contents from: Website: www.j-igu.in . Quotations on Desertification Erosion, desertification, and pollution have become our lot. It is a weird form of suicide, for we are bleeding our planet to death. Gerald Durrell (1925-1995) was a British naturalist, zookeeper, conservationist and author. *** We already have the statistics for the future: the growth percentages of pollution, overpopulation, desertification. The future is already in place. Gunther Grass (1927- 2015) was a German novelist, poet, playwright, sculptor, and recipient of the Nobel Prize in Literature. *** Drought does not have to become famine. Too often the international community reacts too late. Too often decisions are taken based on false economies. In the end, we count the cost not just in human lives but in the extra expense of responding to crises that could have been averted for a fraction of the price. The world’s drylands are too often an investment desert, seen by governments and the international community as a lost cause. Ban Ki-moon (1944--) is a South Korean diplomat. *** “Increased aridity is making the drylands the most conflict prone region of the world,” Gnacadja (1958--) a former environment minister in Benin. *** Combating desertification and soil degradation requires better land management, better equipment and new technology to manage water, drought resistant seeds and payment to communities for preserving the soil. Gnacadja (1958--) a former environment minister in Benin. *** “If not prevented, desertification of the world can one day make the camels as the best and the sole cars of our civilisation!” Mehmet Murat ildan (1965--) is a Turkish playwright and writer. *** There have always been tensions and conflicts between agricultural and pastoral practices but desertification has accentuated them. Yakubu dalhat of Savanna an environmental defence group. Editorial Two year term of present editorial board ends on 31st I have taken a decision to bring out these unconventional March, 2018. On the same day present term of office editorials basically to motivate young researchers in bearers of Indian Geophysical Union also comes to an end. developing a liking for our science. With this last editorial Some of the editorial board members and IGU executive from my computer (not from my pen, in literal sense) such committee members will continue, making the change unconventional editorials may cease to exist and something over reasonably smooth. better may emerge. As Chief Editor of JIGU for the last 4 years I wanted all Interested may please read the below and propagate the our fellow editorial board members (Fellow volunteers) importance of constantly upgrading our knowledge base by to feel comfortable, listened to, and truly part of the reading many illuminating scientific articles. whole process of publication. I have partly succeeded in achieving this. A small group of volunteers succeeded in *Need to
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