Flood Frequency Analysis of Betwa River,Madhya Pradesh India     

H. K. Pandey  Shivam Dwivedi  Kamlesh Kumar 《Journal of the Geological Society of India》2018,92(3):286-290

Flood is common phenomena worldwide since time immemorial. Recently the change in climatic parameters has drastically affected the pattern and magnitude of flood. India being one of the tropical country face flood and drought situations every year, therefore it needs accurate assessment and forecast of flood for proper management of natural resources.An attempt has been made through the present study which consists frequency analysis on maximum daily discharge data in Betwa river at Basoda, Mohana and Shahijina gauging stations in Madhya Pradesh state using Gumbel’s Extreme value distribution and Log Pearson Type-3 distribution for 20 years period (1993-2012).The result shows that Log Pearson Type-3 distribution is better suited for Betwa basin. The results can be used by civil engineers for deciding the dimensions of hydraulic structures such as spillways, dams, bridges etc. Floods are forecasted for the different return periods for Betwa river.  相似文献   

Low level cloud motion vectors from Kalpana-1 visible images   总被引：1，自引：0，他引：1  

INDERPREET KAUR  S K DEB  C M KISHTAWAL  P K PAL  RAJ KUMAR 《Journal of Earth System Science》2013,122(4):935-946

  相似文献   

The South India Precambrian crust and shallow lithospheric mantle: Initial results from the India Deep Earth Imaging Experiment (INDEX)     

S S RAI  KAJALJYOTI BORAH  RITIMA DAS  SANDEEP GUPTA  SHALIVAHAN SRIVASTAVA  K S PRAKASAM  K SIVARAM  SUDESH KUMAR  RISHIKESH MEENA 《Journal of Earth System Science》2013,122(6):1435-1453

  相似文献   

Grain-size distribution,morphoscopy and elemental chemistry of suspended sediments of Pindari Glacier,Kumaon Himalaya,India     

SHIV KUMAR PANDEY  ABHAY KUMAR SINGH  S. I. HASNAIN 《水文科学杂志》2013,58(2):213-226

Abstract

Suspended sediment concentrations in the meltwater of Pindari Glacier were determined at regular intervals in four ablation seasons. The late ablation periods (September 1994 and October 1995) were characterized by a reduced level of sediment concentration, while the sampling periods of early ablation (May 1994 and July 1995) showed very high concentrations of suspended sediment in the meltwater. Grain size distribution shows the dominance of medium and coarse silt fractions of the mean size of the suspended sediments between 4.35 and 5.82 ø. Clay size constitutes about 7% of the total size population. The majority of the samples are poorly sorted, symmetrically to finely skewed and mesokurtic in nature. The grain shows texture of mechanical and chemical origin, in which mechanical texture is predominant on most of the grains. It was observed that the grains were mostly subangular to subrounded in shape with variable size ranges. Bulk sediment chemistry consists mostly (>70%) of the five elements, Si, Al, K, Fe and Mg. Iron (Fe) and Mn are dominant heavy metals and sediments show the elemental abundance in the order of Fe > Mn > Zn > Cu > Ni > Pb. The Chemical Index of Alteration (CIA) of suspended sediments (57) is relatively higher than in the case of average unweathered upper continental crust (~50) indicating a higher degree of weathering due to glacier grinding and crushing action. Quartz is the most dominant mineral, followed by mica, illite, feldspar and kaolinite.  相似文献   

Clay mineralogy of the ocean sediments from the Wilkes Land margin,east Antarctica: implications on the paleoclimate,provenance and sediment dispersal pattern   总被引：1，自引：0，他引：1  

Kamlesh Verma  Sanjeeb Bhattacharya  P. Biswas  Prakash K. Shrivastava  Mayuri Pandey  N. C. Pant  IODP Expedition Scientific Party 《International Journal of Earth Sciences》2014,103(8):2315-2326

Core U1359 collected from the continental rise off Wilkes Land, east Antarctica, is analyzed for the clay mineralogy and carbon content. The temporal variation of the clay mineralogical data shows a dominance of illite with chlorite, smectite and kaolinite in decreasing concentration. Clay mineral illite is negatively correlated with smectite which shows enrichment during 6.2–6.8, 5.5–5.8, 4.5 and 2.5 Ma. The mineralogical analyses on the silt size fraction (2–53 μm) of some selected samples were also carried out. The combined result of both the size fractions shows the presence of chlorite and illite in both size fractions, smectite and kaolinite only in clay size fraction (<2 μm) and similarity in the crystallinity and chemistry of illite in both fractions. Similar nature of illite in both fractions suggests negligible role of sorting probably due to the deposition from the waxing ice sheet. During times of ice growth, nearby cratonic east Antarctica shield provided biotite-rich sediments to the depositional site. On the other hand, the presence of smectite, only in the clay size fraction, suggests the effective role of sorting probably due to the deposition from distal source in ice retreat condition. During times of ice retreat, smectite-rich sediment derived from Ross Orogen is transported to the core site through surface or bottom water currents. Poor crystallinity of illite due to degradation further corroborates the ice retreat condition. The ice sheet proximal sediments of U1359 show that in the eastern part of Wilkes Land, the ‘warming’ was initiated during late Miocene.  相似文献   

Determination of some carcinogenic PAHs with toxic equivalency factor along roadside soil within a fast developing northern city of India     

A VANEET KUMAR  N C KOTHIYAL  SARUCHI KUMARI  R MEHRA  A PARKASH  R R SINHA  S K TAYAGI  R GABA 《Journal of Earth System Science》2014,123(3):479-489

The objective of the present study was to ascertain contamination levels, distribution behaviour and PAHs exposure during summer, winter and autumn during 2011–2012 in one of the developing cities of northern India. Average PAHs concentration was found to be 18.17, 4.04 and 16.38 μg g ^?1, whereas, concentration of 16 individual PAHs was found to vary between 0.02 and 200.23, 0.008 and 28.4 μg g ^?1, and 0.01 and 252.55 μg g ^?1 during summer, winter and autumn seasons, respectively. The average concentration of low and high carcinogenic PAHs during summer, winter and autumn was found to be 5.1 and 31.29, 2.1 and 6.4, 4.74 and 35.08 μg g ^?1 at most intercepts. The average ratio of low to high carcinogenic PAHs was found to be 1:6, 1:3, 1:7.6 during summer, winter and autumn, respectively. Five ringed PAHs were found in higher concentration in all seasons. Dib(ah)A and B(a)P were the two individual PAHs found in highest concentration during summer, winter and autumn seasons. Two tailed T-test was applied for authenticity of the results. Toxic equivalency factor of B(a)P and Dib(ah)A was maximum as compared to other PAHs. The study could be of great significance for the planners while considering environmental remedial measures.  相似文献   

From the Journal Editor     

Kamlesh Lulla 《国际地球制图》2013,28(3)

  相似文献   

Earth observations during space shuttle mission STS‐45 mission to planet earth March 24—April 2, 1992     

David E. Pitts  Michael R. Helfert  Kamlesh P. Lulla  Mary Fae McKay  Victor S. Whitehead  David L. Amsbury 《国际地球制图》2013,28(4):69-80

Abstract

The impact of animals upon the landscape, through such actions as trampling, feeding, burrowing, mounding, and dam building, is a topic of interest in university geography classrooms. However, the relatively fine‐scale nature of most such impacts precludes its examination via remote sensing. Nevertheless, remote sensing of many types of animal impact is possible, and in this paper I illustrate several such examples, primarily drawn from free‐access sites on the World Wide Web, using a variety of remote sensing platforms. Instructors of physical geography or resource/land use management courses can thus introduce a variety of remote sensing concepts and imagery types in their classrooms while at the same time examining the role of animals on the landscape.  相似文献   

Earth observations during space shuttle right STS‐29: Discovery's Voyage to the earth     

Kamlesh Lulla  Michael Helfert  Victor Whitehead  David Amsbury  Michael Coats  John Blaha 《国际地球制图》2013,28(4):67-80

Abstract

Today's Geography graduates are employed by a diverse set of employers, and the jobs these individuals fill are as varied as the field of Geography itself. Geographers who join corporate workplace teams may need to find common grounds for communication with their business school‐trained colleagues. This cross‐disciplinary study examines the curricula of introductory courses in Geographic Information Systems (GIS) and one of its business counterparts, Accounting Information Systems (AIS), through an analysis of GIS and AIS textbooks. The findings suggest that there are areas in which shared background exists. Introductory information about systems, and an understanding of database architectures are the most likely areas of commonality; depending on which GIS text was used during the geographer's training, the geographer may also share background in such areas as systems analysis, database management systems, and data modeling.  相似文献   

From the chief editor     

Kamlesh Lulla 《国际地球制图》2013,28(3)

  相似文献