1999 Earth and Planetary Sciences

Proceedings of the Indian Academy of Sciences
Earth and Planetary Sciences

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Vol. 108, January-December 1999
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Contents

March 1, 1999	Pages
What triggers Koyna region earthquakes? Preliminary results from seismic tomography digital array — S. S. Rai, S. K. Singh, P. V. S. S. Rajagopal Sarma, D. Srinagesh, K. N. S. Reddy,K. S. Prakasam, Y. Satyanarayana	1-14
Rheological stratification of the Indian continental lithosphere: Role of diffusion creep — A. Manglik and R. N. Singh	15-21
Fluid evolution in quartz vein-hosted tungsten mineralization in Chhendapathar,Bankura District, West Bengal: Evidence from fluid inclusion study — B. Mishra, D. C. Pal and M. K. Panigrahi	23-31
Alkaline rocks of Samchampi-Samteran, District Karbi Anglong, Assam, India — S. Nag, S. K. Sengupta, R. K. Gaur and A. Absar	33-48
K-Ar age of Ukra glauconites from the Kutch Basin, India — S. S. Rathore, B. N. Prabhu, A. R. Vijan, K. C. Vig and K. N. Misra	49-55
Mudbank regime off the Kerala coast during monsoon and non-monsoon seasons — R. Tatavarti, A. C. Narayana, P. Manoj Kumar and Shyam Chand	57-68
June 2, 1999
Basic postulates of ground-water occurrence and movement — T. N. Narasimhan	69-79
Fractal analysis of bathymetry and gravity profiles across the Chagos-Laccadive Ridge and the Carlsberg Ridge in the Indian Ocean — B. Ashalatha and R. N. Singh	81-85
Probabilities of occurrence of great earthquakes in the Himalaya — K. N. Khattri	87-92
Tectonic stress field in the epicentral zone of the Latur earthquake of 1993 — S. V. Srirama Rao, K. B. Chary, T. N. Gowd and F. Rummel	93-98
Two-dimensional interpretation of gravity anomalies over sedimentary basins with an exponential decrease of density contrast with depth — D. Bhaskara Rao and C. P. V. N. J. Mohan Rao	99-106
Late Quaternary sediments from Nal Sarovar, Gujarat, India: Distribution and provenance — K. Pandarinath, Sushma Prasad, R. D. Deshpande and S. K. Gupta	107-116
September 3, 1999
Fourier's heat conduction equation: History, influence and connections — T. N. Narasimhan	117-148
Application of Weibull model for redefined significant wave height distributions — G. Muraleedharan, N. Unnikrishnan Nair and .P G. Kurup	149-153
Tidal propagation in the Gulf of Khambhat, Bombay High, and surrounding areas — A. S. Unnikrishnan, S. R. Shetye and G. S. Michael	155-177
187Re-187Os in Lesser Himalayan sediments: Measurement techniques and preliminary results — J. R. Trivedi, Sunil K. Singh and S. Krishnaswami	179-187
A balanced cross section across the Himalayan foreland belt, the Punjab and Himachal foothills: A reinterpret at ion of structural styles and evolution — Dilip K. Mukhopadhyay and Premanand Mishra	189-205
Strain variation in fold-and-thrust belts: Implications for construction of retrodeformable models — Malay Mukul	207-221
December 4, 1999
Lemniscate representation for inversion of gravity and magnetic data through nonlocal optimization — P. S. Moharir, V. M. Maru and S. Srinivas	223-231
EM2INV — A finite difference based algorithm for two-dimensional inversion of geoelectromagnetic data — P. K. Gupta, Sri Niwas and Anupma Rastogi	233-253
Paleocene on-spreading-axis hotspot volcanism along the Ninetyeast Ridge: An interaction between the Kerguelen hotspot and the Wharton spreading center — K. S. Krishnan, D. Gopala Rao, L. V. Subba Raju, A. K. Chaubey, V. S. Shcherbakov, A. I. Pilipenko and I. V. Radhakrishna Murthy	255-267
Bernstein preprocessing for nonlinear least squares inversion of gravity and magnetic data — S. Srinivas, P. S. Moharir and V. M. Maru	269-275
Prediction of weather parameters on a very short time scale by an Auto Regressive process for aviation flight planning — R. Suresh, N. Sivagnanam and K. Suresh Chandra	277-286
Layered clouds in the Indian monsoon region — M. K. Rama Varma Raja, G. C. Asnani, P. S. Salvekar, A. R. Jain, D. Narayana Rao, S. Venkoba Rao, P. Kishore and M. Hareesh	287-295
Pn wave velocity and Moho geometry in north eastern India — S. S. Rai, K. S. Prakasam and N. Agrawal	297-304
Global temperature and monsoon activity — S. S. Dugam and S. B. Kakade	305-307
A note on the weather and rice yield relationship at some stations in India — R. P. Samui	309-316
Local scale heat advection — V. M. Murthy	317-320
A synoptic-climatic study of the onset of southwest monsoon over Mumbai — Shravan Kumar, Thakur Prasad and Asha Lata Agrawal	321-326
Monsoon rainfall and its variability in Godavari river basin — G. Nageswara Rao	327-332