Informatics Publishing Limited

A. K. Awasthi ¹, B. Parkash ¹, B. B. S. Singhal ¹

Affiliations
1 University of Roorkee, Roorkee, IN

Abstract

Dispersal pattern of sandstones of the Jodhpur Formation around Bhopalgarh (Rajasthan) was studied by measuring dip azimuths of cross-bedding foresets. Variance components of paleocurrents due to various sources were analysed. Low variance of paleocurrents, profusely cross-bedded character of sandstones and mainly arenaceous nature of the formation, suggested that the deposition of the major part of the Jodhpur Formation took place under braided fluvial conditions.

Full Text

   

B. B. S. Singhal ¹, R. P. Mathur ², D. C. Singhal ³, B. S. Mathur ³, V. K. Minocha ¹, A. K. Seth ¹, S. K. Sinha ¹

Affiliations
1 Department of Earth Sciences, University of Roorkee, IN
2 Department of Civil Engineering, University of Roorkee, IN
3 Department of Hydrology, University of Roorkee, IN

Abstract

To assess quantitatively the effect of organic load from the Star Paper Mill on the quality of Hindon water, a dissolved oxygen sag model is developed by using Streeter-Phelps equation for a stretch of 7 km down-stream of the paper mill effluent and Hindon confluence. The critical DO deficit and critical time for minimum dissolved oxygen have been computed. The study reveals that severe anaerobic condition prevails in the river between a distance of 2.2 km to 3.6 km from the confluence of Paper Mill effluent with the Hindon river. The sag in dissolved oxygen curve is not fully apparent in the observed model; though the occurrence of reducing condition is correlated by field observations.

Full Text