Erratum to: Identification of Seismogenic Anomalies Induced by 11 April, 2012 Indonesian Earthquake (M = 8.5) at Indian Latitudes Using GPS-TEC and ULF/VLF Measurements     

Pundhir  Devbrat  Singh  Birbal  Singh  Rajpal  Sharma  Sarita 《Geomagnetism and Aeronomy》2022,61(1):S167-S167

Geomagnetism and Aeronomy - An Erratum to this paper has been published: https://doi.org/10.1134/S0016793222330015  相似文献   

Optimizing urban stormwater control strategies and assessing aquifer recharge through drywells in an urban watershed     

Boroomandnia  Arezoo  Bozorg-Haddad  Omid  Bahrami  Mahdi  Goharian  Erfan  Singh  Vijay P.  Lo&#;iciga  Hugo A. 《Hydrogeology Journal》2021,29(4):1379-1398

Hydrogeology Journal - A coupled simulation-optimization model (SOM) is developed in this work that links the US Environmental Protection Agency’s Storm Water Management Model (SWMM) with a...  相似文献   

Bouncing cosmologies with viscous fluids     

T. Singh  R. Chaubey  Ashutosh Singh 《Astrophysics and Space Science》2016,361(3):106

  相似文献   

Explaining the accelerated expansion of the Universe by particle creation     

Ibotombi N. Singh  Bembem Y. Devi 《Astrophysics and Space Science》2016,361(4):131

  相似文献   

Mass Balance Estimation of Dokriani Glacier in Central Indian Himalaya Using Remote Sensing Data     

Har Amrit Singh Sandhu  Hemendra Singh Gusain  Manoj Kumar Arora  Arun Bawa 《Journal of the Indian Society of Remote Sensing》2018,46(11):1835-1840

Dokriani Glacier is regarded as one of the important glaciers of Bhagirathi River basin, which fed river Ganges. The length of the glacier is about 4.6 km, and snout elevation is about 4028 m m.s.l. The mass balance of this glacier was calculated using field-based measurements for few years during 1994 to 2000. However, due to remote and poor accessibility, the field-based measurements could not continue; thus, remote sensing-based methods become useful tool to estimate the long-term mass balance of the glacier. In this study, glacier mass balance has been determined using accumulation area ratio (AAR) method. Remote sensing data sets, e.g. Landsat TM, ETM?+?and OLI, have been used to estimate AAR for different years from 1994 to 2014. An attempt has also been made to develop a mathematical relationship between remote sensing-derived AAR and field-observed mass balance data of the glacier. Further, this relationship has been used to estimate mass balance of the glacier for different years using remote sensing-derived AAR. Estimated mass balance was validated from ground-observed mass balance for few years. The field-observed and remote sensing-derived mass balance data are compared and showed high correlation. It has been observed that AAR for the Dokriani Glacier varies from 0.64 to 0.71. Mass balance of the glacier was observed between ??15.54 cm and ??50.95 cm during the study period. The study highlights the application of remote sensing in mass balance study of the glaciers and impact of climate change in glaciers of Central Indian Himalaya.  相似文献   

A Case Study: Heavy Rainfall Event Comparison Between Daily Satellite Rainfall Estimation Products with IMD Gridded Rainfall Over Peninsular India During 2015 Winter Monsoon     

Anil Kumar Singh  Virendra Singh  K. K. Singh  Jayant Nath Tripathi  Amit Kumar  Anil Kumar Soni  M. Sateesh  Chinmay Khadke 《Journal of the Indian Society of Remote Sensing》2018,46(6):927-935

India Meteorological department (IMD) used INSAT-3D Metrological Satellite Imager data to drive two type rainfall estimation products viz-Hydro Estimate (HE) and INSAT Multi-Spectral Rainfall Algorithm (IMSRA) on half hourly rainfall rate and daily accumulated rainfall in millimeter (mm). Integrated Multi-Satellite Retrieval for GPM (IMERG) product is being derived by NASA and JAXA by using Global Precipitation Mission (GPM) satellites data. IMSRA and GPM (IMERG) are gridded data at 10 km spatial resolution and HE is available at pixel level (4 km at Nadir). IMD provides gridded rainfall data at 0.25° × 0.25° resolution which is based on wide coverage of 6955 actual observation. In present study, validation of INSAT-3D based Hydro Estimator (HE), INSAT Multi-Spectral Rainfall Algorithm (IMSRA) and Integrated Multi-Satellite Retrieval for GPM (IMERG) of Global Precipitation Mission (GPM) satellites are carried out with IMD gridded data set for heavy rainfall event during winter monsoon, over peninsular India (November–December 2015). In validation, Nash–Sutcliffe efficiencies (NSE), RMSE, Correlation, Skilled scores are calculated at grid level for heavy and very heavy rain categories and the values of NSE of HE (? 32.36, ? 3.12), GPM (? 68.67, ? 2.39) and IMSRA (? 0.02, 0.28) on 16th November 2015 and HE (? 13.65, ? 1.69), GPM (? 43.79, ? 2.94) and IMSRA (? 1.08, ? 1.60) on 2nd Dec 2015, for heavy and very heavy rainfall. On both days, HE is showing better rainfall estimate compare to GPM for Heavy rainfall and GPM showing better estimation for very heavy rainfall events. In all the cases IMSRA is underestimating, if daily rain fall exceeded 75 mm.  相似文献   

Forest Fire Burnt Area Assessment in the Biodiversity Rich Regions Using Geospatial Technology: Uttarakhand Forest Fire Event 2016     

Stutee Gupta  Arijit Roy  Dhruval Bhavsar  Rajkanti Kala  Sarnam Singh  A. Senthil Kumar 《Journal of the Indian Society of Remote Sensing》2018,46(6):945-955

The hills of Uttarakhand witness forest fire every year during the summer season and the number of these fire events is reported to have increased due to increased anthropogenic disturbances as well as changes in climate. These fires cause significant damage to the natural resources which can be mapped and monitored using satellite images by virtue of its synoptic coverage of the landscape and near real time monitoring. This study presents burnt area assessment caused by the fire episode of April 2016 to the forest vegetation. Digital classification of satellite images was done to extract the burnt area which was found to be 3774.14 km², representing 15.28% of the total forest area of the state. It also gives an account of cumulative progression of forest fire in Uttarakhand using satellite images of three dates viz. 23rd, 27th May and 2nd June, 2016. Results were analyzed at district, administrative and forest division level using overlay analysis. Separate area statistics were given for different categories of biological richness, forest types and protected areas affected by forest fire. The burnt area assessment can be used in mitigation planning to prevent drastic ecological impacts of the forest fire on the landscape.  相似文献   

Assessment of Potential Alkali Aggregate Reactivity for Siliceous and Carbonate Aggregates: A Case Study     

M. Ahmad  M. K. Ansari  Rajesh Singh  L. K. Sharma  T. N. Singh  Sandra Pires 《Journal of the Geological Society of India》2018,91(4):467-474

Alkali-aggregate reactivity (AAR) involves a reaction between the pore solution of concrete and certain minerals found in some aggregates. To assess the potential AAR various physical and chemical tests are available and extensively used. The petrographic examination is the initial assessment that decides the further investigation for potential reactivity of an aggregate. A chemical approach is another option to assess the aggregate for potential AAR. The accelerated mortar bar method and concrete prism tests are other very important tests for determination of potential AAR of aggregates samples. However, a combination of the results of all the techniques provides most reliable results for potential AAR in aggregates. Moreover, each test represents the stepwise investigation and provides the decision for the test of next approach. Petrographic examination and chemical test methods are the quick decision-making methods for the estimation of potential AAR. In some cases, by these two methods, the aggregate can be selected and rejected confidently. However, for critical values or doubtful aggregates, further tests are necessary to develop a higher confidence level of the results. The present study comprises of the assessment of the alkali-reactivity of siliceous and carbonate aggregates using petrographic and chemical approaches. X-ray diffraction analysis was used as a complementary method to the petrographic evaluation. Moreover, under chemical approach, two separate test methods were used for siliceous and carbonate aggregates. The study also included a comparison between the petrographic examination and chemical analysis for the same aggregate samples and found significant results.  相似文献   

Obituary     

Bijendra Singh  V.M. Tiwari 《Journal of the Geological Society of India》2018,92(3):379-379

  相似文献   

Estimation of Natural Radionuclides and Exhalation Rate in Surface Soils of Four Districts of Haryana,India     

Amanjeet Panghal  Ajay Kumar  Suneel Kumar  Joga Singh  Parminder Singh  B. S. Bajwa 《Journal of the Geological Society of India》2018,91(6):695-699

A fossil wood of Lagerstroemia L. from the Upper Siwalik sediments of Arunachal Pradesh is described. The genus is recorded for the first time from this state. The modern analog of the fossil species i.e. L. tomentosa C. Presl is not found in the fossil locality at present.. The most plausible reason for the disappearance of the species from the fossil locality is an increase in temperature seasonality caused by the upheaval of the Himalaya during the Pleistocene.  相似文献