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Co-Authors
- K. C. Sahoo
- Utpal Bose
- S. Bhattacharya
- Krishan Dutt
- V. Aneel Kumar
- S. S. Sarkar
- S. Chowdhury
- I. Chowdhury
- D. K. Bhatt
- Surendra Prasad
- R. L. Jain
- B. S. Paliwal
- Shweta Sharma
- Y. S. Rao
- Ajai
- R. K. Gangwar
- B. S. Gohil
- Sanjib K. Deb
- Prashant Kumar
- Munn V. Shukla
- B. Simon
- P. K. Pal
- K. N. Babu
- David R. Thompson
- Robert O. Green
- Piyushkumar N. Patel
- R. P. Prajapati
- Brian D. Bue
- Sven Geier
- Michael L. Eastwood
- Mark C. Helmlinger
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Mathur, A. K.
- On the Occurrence of Sargur Type Banded Iron-Formation in Banded Gneissic Complex of South Rajasthan
Abstract Views :223 |
PDF Views:1
Authors
K. C. Sahoo
1,
A. K. Mathur
1
Affiliations
1 Geological Survey of India, Jhalana Dungri, Jaipur, IN
1 Geological Survey of India, Jhalana Dungri, Jaipur, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 38, No 3 (1991), Pagination: 299-302Abstract
The occurrence of BIF from a part of Banded Gneissic Complex of Rajasthan is reported. Older than 3.0 Ga granites, their field-setting and petrochemical characters are comparable to the BIF of older supracrustals of south India (Sargur Group).Keywords
Banded Iron-Formation, Banded Gneissic Complex, Rajasthan.
- Event Stratigraphy and Physico-Chemical Characters of Banded Gneissic Complex and Associated Supracrustals in the South Mewar Plains of Rajasthan
Abstract Views :171 |
PDF Views:1
Authors
Utpal Bose
1,
A. K. Mathur
1,
K. C. Sahoo
2,
S. Bhattacharya
1,
Krishan Dutt
1,
V. Aneel Kumar
3,
S. S. Sarkar
1,
S. Chowdhury
1,
I. Chowdhury
1
Affiliations
1 Geological Survey of India, Jhalana Dungri, Jaipur - 302 004, IN
2 Geological Survey of India, Bhubaneswar - 751 012, IN
3 Geological Survey of India, Hyderabad - 500 660, IN
1 Geological Survey of India, Jhalana Dungri, Jaipur - 302 004, IN
2 Geological Survey of India, Bhubaneswar - 751 012, IN
3 Geological Survey of India, Hyderabad - 500 660, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 47, No 3 (1996), Pagination: 325-338Abstract
The oldest cratonic nucleus pf the Western Indian shield, familiarly known as the Banded Gneissic Complex (BGC), occupies a large tract in the Mcwar plains of South Rajasthan. It has essentially an old gneissic component (3.3 Ga) and a host of mafic bodies associated with detrital and chemogenic sediments which have been subjected to multiple phases of anatexis and granite intrusions (2.9 Ga and later events). The emplacement of Berach granite and succeeding dolerite dyke swarms mark the end-Archaean cratonization process. This also initiated intracratonic and cratonmarginal basin formation.Later magmatism, especially along the basement-cover interface. is due to local remobilisation of the basement at the time of Proterozoic orogeny.
Keywords
Banded Gneissic Complex, Stratigraphy, Petrochemistry, Rajasthan.- Some Critical Field Observations on the Genesis and Stratigraphical Status of Pokaran Boulder Bed, Western Rajasthan
Abstract Views :195 |
PDF Views:2
Authors
Affiliations
1 57, Clay Square, Lucknow - 226 001, IN
2 Geological Survey of India, Palaeontology Division, Jaipur - 302 004, IN
1 57, Clay Square, Lucknow - 226 001, IN
2 Geological Survey of India, Palaeontology Division, Jaipur - 302 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 65, No 3 (2005), Pagination: 301-308Abstract
Based on the present detailed field observations on the physiographic setting and the lithological nature of the Pokran Boulder Bed (PBB), the authors conclude that it is a consolidated sedimentary bed, apparently in the nature of a glacial drift and not a tillite (like Talchir Formation of Gondwana Supergroup). The denuded upper surface of bouldery hummocks of the PBB on the ground invariably shows presence of loose boulders. The consolidated horizons lie buried within the hummocks, wherever thicker horizons of PBB are still preserved. The weathered top of the PBB, forming rolling, hummocky topography is reminiscent of continental glaciated areas. It is likely that the PBB represents remnant of the Well-Known global Precambrian (Vendian) Ice Age. It rests directly over the rhyolitic (Malani Rhyolite) basement.The field observations also lead to the conclusion that the thick succession of sandstones of the Jodhpur Group (sometimes referred as 'Jodhpur sandstone') of Marwar Supergroup (MSG) only occasionally overlie the PBB and always with a marked unconformity, such as at Gaphur Khan ki Dhani and elsewhere. Clearly the PBB does not form part of the stratigraphy of Marwar Supergroup.
Keywords
Pokaran Boulder Bed, Genesis, Stratigraphical Status, Marwar Supergroup, Rajasthan.- Critical Field Observations on the Genesis and Stratigraphical Status of Pokaran Boulder Bed, Western Rajasthan
Abstract Views :201 |
PDF Views:140
Authors
Affiliations
1 Office of the Dean, New Campus, Jai Narain Vyas University, Jodhpur - 342 00 1, IN
2 57, Clay Square, Lucknow - 226 001, IN
1 Office of the Dean, New Campus, Jai Narain Vyas University, Jodhpur - 342 00 1, IN
2 57, Clay Square, Lucknow - 226 001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 66, No 3 (2005), Pagination: 373-376Abstract
No Abstract.Full Text
- Note on the Present Stratigraphic Status of Khichan Conglomerate, Jodhpur District, Rajasthan
Abstract Views :170 |
PDF Views:145
Authors
Affiliations
1 Geological Survey of India, Jhalanadungari, Jaipur -302 004, IN
1 Geological Survey of India, Jhalanadungari, Jaipur -302 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 58, No 6 (2001), Pagination: 543-544Abstract
Recent geological mapping has shown that Khichan Conglomerate marks the hiatus between the Nagaur Formation of Marwar Supergroup (Eocambrian ?) and the Permo-Carboniferous Badhaura Formation in Rajasthan.Full Text
- Application of DInSAR Technique for Post-Earthquake Land Deformation Mapping of Eastern Nepal
Abstract Views :293 |
PDF Views:101
Authors
Affiliations
1 Space Applications Centre (ISRO), Ahmedabad 380 058, IN
2 Indian Institute of Technology Bombay, Mumbai 400 076, IN
1 Space Applications Centre (ISRO), Ahmedabad 380 058, IN
2 Indian Institute of Technology Bombay, Mumbai 400 076, IN
Source
Current Science, Vol 110, No 3 (2016), Pagination: 302-304Abstract
No Abstract.Full Text
- Humidity Profile Retrieval from SAPHIR On-Board the Megha-Tropiques
Abstract Views :234 |
PDF Views:93
Authors
A. K. Mathur
1,
R. K. Gangwar
1,
B. S. Gohil
1,
Sanjib K. Deb
1,
Prashant Kumar
1,
Munn V. Shukla
1,
B. Simon
1,
P. K. Pal
1
Affiliations
1 Atmosphere and Oceanic Sciences Group (EPSA), Space Applications Centre (ISRO), Ahmedabad 380 015, IN
1 Atmosphere and Oceanic Sciences Group (EPSA), Space Applications Centre (ISRO), Ahmedabad 380 015, IN
Source
Current Science, Vol 104, No 12 (2013), Pagination: 1650-1655Abstract
The Megha-Tropiques (MT) satellite, a joint Indo- French mission, was launched by ISRO's PSLV-C18 on 12 October 2011 from Sriharikota, India. SAPHIR, a microwave humidity sounder on-board Megha Tropiques operates in six channels with frequencies around 183.31 GHz. A radiative transfer simulationbased operational algorithm has been developed to retrieve layer-averaged relative-humidity (LARH) for six atmospheric layers from the surface to nearly 12 km using SAPHIR observations over land and ocean under non-rainy conditions. SAPHIR-derived LARH for the period July to November 2012 has been validated with concurrent quality-controlled radiosonde observations as well as with ECMWF analysis data. Global validation with radiosonde and ECMWF data shows that ischolar_main mean square deviation in LARH for all the six layers is nearly 20% and 15% respectively, after bias correction.
Keywords
Atmospheric Layers, Humidity Sounder, Radiosonde Observations, Relative Humidity.Full Text
- An Empirical Comparison of Calibration and Validation Methodologies for Airborne Imaging Spectroscopy
Abstract Views :216 |
PDF Views:83
Authors
K. N. Babu
1,
A. K. Mathur
1,
David R. Thompson
2,
Robert O. Green
2,
Piyushkumar N. Patel
3,
R. P. Prajapati
1,
Brian D. Bue
2,
Sven Geier
2,
Michael L. Eastwood
2,
Mark C. Helmlinger
2
Affiliations
1 Space Applications Centre (ISRO), Ahmedabad 380 015, IN
2 Jet Propulsion Laboratory, California Institute of Technology, US
3 Physical Research Laboratory, Ahmedabad 380 009, IN
1 Space Applications Centre (ISRO), Ahmedabad 380 015, IN
2 Jet Propulsion Laboratory, California Institute of Technology, US
3 Physical Research Laboratory, Ahmedabad 380 009, IN
Source
Current Science, Vol 116, No 7 (2019), Pagination: 1101-1107Abstract
To date, a large number of existing applications in India have used multi-band observations from airborne and spaceborne platforms. New sensors are providing additional capabilities thanks to special aerial missions with the compact airborne spectrographic imager (CASI), the short-wave infrared (SWIR) full spectrum imager (SFSI) and the National Aeronautics and Space Administration’s (NASA’s) Next Generation Airborne Visible/Infrared Imaging Spectrometer (AVIRIS-NG). Opportunities to exploit quantitative spectroscopic signatures and high spatial resolution have garnered great interest among the scientific community, and the success of these missions will rely on accurate calibration. Here we focus on a vicarious calibration experiment conducted for the AVIRIS-NG India campaign. We discuss initial validation results, with descriptions of in situ and remote calibration and measurement protocols, geometric processing with precise position and attitude data, and atmospheric simulations used to validate the remote measurement. A partnership between Indian Space Research Organisation (ISRO) and NASA investigators proved a unique opportunity to assess the empirical variability in results, indicating their sensitivity to modelling choices and assumptions. The vicarious calibration exercise uses multiple radiative transfer models, including MODTRAN 6.0 and a new version of the 6S radiative transfer code, viz. 6SV2.1, which is capable of accounting for polarization.Keywords
Hyperspectral Measurements, Radiative Transfer, Reflectance, Vicarious Calibration.Full Text
References
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