Snow cover area change and its relations with climatic variability in Kashmir Himalayas,India     

Mifta ul Shafiq  Zahoor ul Islam  P. K. Joshi  Waseem A. Bhat 《国际地球制图》2019,34(6):688-702

Snowmelt makes an essential component of the hydrological system of Kashmir Himalayas. The present study was carried out to examine the status of Snow Cover Area (SCA) using Moderate Resolution Imaging Spectroradiometer (MODIS) 8-day Snow Cover Product between 2000 and 2016. The intra- and inter-annual variability in SCA and in meteorological parameters was observed and various statistical tests were used to study the interrelationship. Results of statistical analysis indicate decrease in maximum temperature (?0.05 °C/year) and minimum temperatures (?0.02 °C/year) while rise in precipitation (19.13 mm/year). It also showed an increase in annual mean SCA (43.5 sq km) during the study period. The analysis was also carried out on a seasonal basis. The results revealed that in Kashmir Himalayas, climate plays a dominating role in controlling the SCA. The results depict the short-term fluctuations in SCA and show the magnitude of change between two successive values being very large in SCA.  相似文献   

Gravitational clustering of galaxies: Derivation of two-point galaxy correlation function using statistical mechanics of cosmological many-body problem     

Farooq Ahmad  Manzoor A. Malik  M. Maqbool Bhat 《Astrophysics and Space Science》2016,361(7):223

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Evaluation of long term trends in apple cultivation and its productivity in Jammu and Kashmir from 1975 to 2015     

Bhat  Mohammad Shafi  Lone  Fayaz A.  Shafiq  Mifta ul  Rather  Javaid A. 《GeoJournal》2021,86(3):1193-1202

GeoJournal - Horticulture plays a pivotal role in the economy of Jammu and Kashmir. Owing to favourable agro-climatic conditions, temperate horticulture is fast expanding in the state which is...  相似文献   

The Micromechanics of Westerley Granite at Large Compressive Loads   总被引：1，自引：0，他引：1  

H. S. Bhat  C. G. Sammis  A. J. Rosakis 《Pure and Applied Geophysics》2011,168(12):2181-2198

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Direct and Indirect Validation of Potential Fishing Zone Advisory off the Coast of Uttara Kannada,Karnataka     

Sanjeev P. Deshpande  K. V. Radhakrishnan  U. Gopalakrishna Bhat 《Journal of the Indian Society of Remote Sensing》2011,39(4):547-554

The technique of predicting Potential Fishing Zone using satellite derived sea surface temperature and chlorophyll is becoming an important aspect for the fishermen. In the present study an attempt has been made to compare fish density/catch per unit effort in the areas predicted by Satellite imagery and available to fishermen via electronic display boards at the fish landing centers of Uttara Kannada district, Karnataka with those of non predicted areas. Direct and Indirect validation was done. Direct method means comparing the catch using fishing vessels simultaneously in the notified region with that of catch from non notified region. And in indirect method by comparing catch data from landing centers on notified days with that of non notified days. Direct validation off Karwar showed that catch was significantly higher in notified (PFZ) area with high densities as compared to non notified (non PFZ) regions. When comparisons of landing center data of Karwar, Tadadi and Bhatkal are done it is evident that in all the centers during the period under study, higher catches were observed on notified days than non notified days except in Bhatkal centre in 2009–10. There by validating the accuracy of PFZ predictions and economic gains to fishermen.  相似文献   

Variation of δ18O, δD and 3H in karst springs of south Kashmir,western Himalayas (India)          下载免费PDF全文

Gh. Jeelani  U. Saravana Kumar  Nadeem A. Bhat  Suman Sharma  Bhishm Kumar 《水文研究》2015,29(4):522-530

Water samples were collected from cold and warm karst springs for stable isotopes (δ¹⁸O and δD) and ³H from SE of Kashmir valley (western Himalayas) to distinguish the sources of recharge and infer their recharge areas. The spring water samples were most depleted in heavier isotopes in May (average δ¹⁸O: ?8.87‰ and δD: ?50.3‰) and enriched in September (average δ¹⁸O: ?7.58‰ and δD: ?48.1‰). The depleted ¹⁸O and ²H of spring waters bear the signatures of winter precipitation while as the enriched ¹⁸O and ²H of spring waters bear the signature of summer rainfall. D‐excess and ³H corroborate with the stable isotope results that the spring flow in spring season (May) and autumn (September) is dominantly controlled by the melting of winter snowmelt and summer rainfall, respectively. The results showed that unlike δD, the δ¹⁸O value in the karst spring waters decreases in January suggesting δ¹⁸O shift. The spring water samples also fall above the Local Meteoric Water Line and Global Meteoric Water Line indicating the δ¹⁸O shift due to interaction of groundwater with the host carbonate rocks during its traverse. The mean elevation of the recharge areas of the springs using δ¹⁸O and δD tracers was also estimated. Copyright © 2014 John Wiley & Sons, Ltd.  相似文献   

Analysis and farmers’ perception of climate change in the Kashmir Valley,India     

Mahdi  S. Sheraz  Dhekale  B. S.  Jan  Rukhsana  Bhat  M. Anwar  Hussain  Ashaq  Jehangir  Intikhab Aalum  Sofi  Najeebul Rehman  Ahmed  Latief  Qureshi  Asif M. Iqbal  Aezum  Aziz Mujtaba  Bangroo  Shabir A.  Wani  Owais Ali  Bahar  F. A.  Mishra  S. K. 《Theoretical and Applied Climatology》2022,149(1-2):727-741

Theoretical and Applied Climatology - Analysis of climatic variables is important for the detection and attribution of climate change trends and has received considerable attention from researchers...  相似文献   

Dispersion measure variations and their effect on precision pulsar timing     

X. P. You  G. Hobbs  W. A. Coles  R. N. Manchester  R. Edwards  M. Bailes  J. Sarkissian  J. P. W. Verbiest  W. van Straten  A. Hotan  S. Ord  F. Jenet  N. D. R. Bhat  A. Teoh 《Monthly notices of the Royal Astronomical Society》2007,378(2):493-506

We present an analysis of the variations seen in the dispersion measures (DMs) of 20-ms pulsars observed as part of the Parkes Pulsar Timing Array project. We carry out a statistically rigorous structure function analysis for each pulsar and show that the variations seen for most pulsars are consistent with those expected for an interstellar medium characterized by a Kolmogorov turbulence spectrum. The structure functions for PSRs J1045−4509 and J1909−3744 provide the first clear evidence for a large inner scale, possibly due to ion–neutral damping. We also show the effect of the solar wind on the DMs and show that the simple models presently implemented into pulsar timing packages cannot reliably correct for this effect. For the first time we clearly show how DM variations affect pulsar timing residuals and how they can be corrected in order to obtain the highest possible timing precision. Even with our presently limited data span, the residuals (and all parameters derived from the timing) for six of our pulsars have been significantly improved by correcting for the DM variations.  相似文献   

Geomorphic analysis reveals active tectonic deformation on the eastern flank of the Pir Panjal Range,Kashmir Valley,India     

Shabir Ahmad  M. I. Bhat  Christopher Madden  B. S. Bali 《Arabian Journal of Geosciences》2014,7(6):2225-2235

There are plenty of faults that show evidence that they are active. Most of the valley’s floor is occupied by unconsolidated Karewa deposits, in particular on the south–southwest of the Kashmir Valley. In such situations, geomorphic data can reveal the location of active faults. Accordingly, we tried to identify geomorphic indices in SW of the Kashmir Valley (Veshav, Rambiara, and Romushi drainage basins), which revealed the area to be potentially tectonically active. This active faulting was further substantiated by drainage anomalies and field investigations, which provides evidence for an emergent out-of-sequence NE-dipping active reverse fault (identified first time on ground) named the Balapur Fault (BF). The BF can be traced over at least 40 km along the southwest side of the Kashmir Valley. The existence of the active Balapur Fault and of two other inferred faults north of the Panjal Thrust or Murree Thrust presents a picture of a more complex strain-partitioning regime in the Kashmir Himalayas than is usually visualized.  相似文献   

Application of INSAT satellite cloud-imagery data for site evaluation work of proposed GRACE observatory     

R. K. Kaul  C. L. Bhat  M. L. Sapru  M. K. Kaul 《Journal of Astrophysics and Astronomy》1994,15(1):95-102

The weather-imageries from the INSAT group of satellites provide reliable and concurrent multistation cloud-cover data — an important input for a proper selection of an observatory site for optical, infra-red and γ-ray astronomy work. Using these data, it is shown that Gurushikar, Mt. Abu, promises to be an excellent site for setting up the proposed GRACE facility for high-sensitivity Gamma-Ray Astrophysics Cerenkov Experiments.  相似文献