Dam Site Identification Using Remote Sensing and GIS (A case study Diamer Basha Dam Site) | Author : Muhammad Zubair Atiq | Abstract | Full Text | Abstract :Selection of suitable sites for construction of dam is the most important phase because a number of factors are required to consider that include topography, geology, tectonic settlements and the slope. We selected Diamer Basha dam site to analyze it feasibility considering real-time field data. Geologically the study site is a part of Chilas Mafic Igneous Complex which is not ophiolite. Matic complex is a block which is 40km in depth and 300km in length. These rocks are comparatively hard in nature and are considered good for construction of dam. Tectonically, we observed that the area under investigation was highly active tectonically. Surface deformation rates of the study site are highest throughout the world because this area is comprised of multiple fault lines that include Main Mantle Thurst (MMT), Main Karakoram Thrurst (MKT), Main Boundary Thurst (MBT) and many others. This area has become a hot cake for the geologist worldwide due to it’s very high surface deformation rates.Tectonically active regions are considered worst for construction sites, e.g., for dam sites. The dam site is actcually laying on the MKT which is not favorable for construction of Diamir Basha dam. A low-level earthquake may generate small cracks in concrete structure and any leakage of water may produce big holes with passage of time which are not remidable. A big level earthquake may vanish the dam site completely. Therefore, the current site is not favorable for construction of dam. |
| Bacteriological and Physicochemical Analysis of Groundwater of Kasur | Author : Syeda Sidrish Batool | Abstract | Full Text | Abstract :Earth is a blue planet because of the rudimentary cause of life, that is water. All the biochemical reactions which are pre-requisite for nourishing life of animals and plants, use water as a basic element. Being a universal solvent, it dissolves almost all minerals present in the soil. It is one of the basic and necessary compounds responsible for the survival of life. The main purpose of research was to determine the quality of groundwater in Kasur near the tanneries. The study is focused on the bacteriological and physicochemical (pH, Temperature, DO, BOD, CO2, TOSM, TDS, TM and heavy metals) parameters. We selected four sites as Din Garh, Qatal Garhi, Mangal Mandi and Kot Haleem Khan for investigation. Coliforms were present in high concentration that produce viruses and bacterial diseases such as typhoid fever, hepatitis, gastrocnemii, dysentery and ear infections. World Health Organization (WHO) has justified that the drinkable water must have zero level of coliform and E.coli. Regarding the Total Suspended Matter (TSM), the values ranged from 0.3-0.5g/l in DIN GHARH, 0.2-0.5g/l in QATAL GHARHI, 0.2-0.5g/l in MANGAL MANDI and 0.2-0.6g/l in KOT HALEEM KHAN. The study concludes that the water pollution due to tanneries in Kasur have changed the bacteriological and physicochemical properties of ground water to a considerable level which is not drinkable. It also conclude that groundwater was contaminated with high concentrations of BOD, TOSM, TDS, TM and Heavy metals due to discharge of industrial effluents. |
| Computation of Temporal Decline to a Vanished Island (A Case Study Zalzala Koh) | Author : Muhammad Saifullah | Abstract | Full Text | Abstract :A massive tremor stuck Baluchistan Pakistan on September 24, 2013 with a magnitude of 7.7 recorded on Richter scale. The epicenter was Awaran Baluchistan which directly affected about 300,000 people leaving about 386 causalities. The impact of this earthquake was so much large that it created a new landmass which was named as Zalzala Koh later. It was the result of strike slip faulting at a depth of 15km. The new born island was full of rich minerals, gases and dead sea animals. This island was 60 feet high, 100 feet wide and 250 feet long. The classification results of Landsat 8 show that the island completely disappeared in 2019 after 6 six years of its birth. First the volume of this island decreases due to reduced pressure of internal gases and secondly, the high-pressure water waves vanished it completely. Satellite imagery proved efficient for spatio-temporal monitoring of various landuse classes. |
| Remote Sensing and Morphotectonic Analysis in Hazara Kashmir Syntaxis Using River Longitudinal Profiles | Author : Saira Batool | Abstract | Full Text | Abstract :The earthquake of Hazara Kashmir Syntaxis (HKS) occurred in Himalayan zone on October 8, 2005. This incidence occurred as a consequence of advanced dispersion of neotectonics of North West edge of subducting Indo-Pak plate located below Eurasia. The objective of this study is to monitor actively deforming neotectonics using SRTM DEM 90 m based automatic drainage network and geomorphometry. Active neotectonics analysis relies on geomorphic indices for instance concavity, steepness, rate maps of relative uplift and Hack-SL gradient. The topographic relative uplift rates (TRUR), steepness, concavity indices and Hack SL provide accurate results for active tectonics of HKS. The topographic relative uplift rates (TRUR ) are relatively high in the central region, north to northwest, north to northeast, and south to southwest which are nearly 2. 5 mm per year. But it is lower i.e., 0.1 mm per year within the eastern region of Hazara Kashmir Syntaxis. Steep slopes and steepened regions are located along NNW and in the east of HKS which are symptomatic representation of neotectonics activity within HKS. Thus shows the effect of neotectonics over the topography and drainage networks of the area under study. TRUR maps indicate more deformation of study area in central, NNE, NNW and SSW parts than the east towards Sri Nagar.
|
|
|