Water surface elevation

This has increased the risk of water pollution and reduced the quality of surface water, resulting in a shortage of clean water for the daily lives of people in the province. The article has studied the application of the MIKE11-ECOLab model and correlation analysis method to assess the current situation of the wastewater receiving capacity of the central river system in Nam Dinh province. At the same time, it also analyzes and predicts the wastewater receiving capacity of the central river system in the province according to the trend of socio-economic development.

9p dianmotminh02 03-05-2024 3 1   Download

In this study, we simulate submarine landslide using the one-dimensional conservative form of the nonlinear shallow water equations (NSWE) in (b s,) coordinate. Where b and s are the elevations of debris bottom and surface, respectively.

7p viohoyo 25-04-2024 5 2   Download

The paper proposed a method to build the flood water depth map of Quang Binh province, Vietnam in the historical flood 2020 based on Sentinel1A satellite images. This method is a combination of the classical Otsu method and the proposed spreading method.

9p viharry 15-12-2022 4 2   Download

This study estimated the time series of surface water area by processing Landsat images from the Google Earth Engine platform. Then, the area – volume – elevation relationship constructed from DEM was used to derived the water level and volume from the surface water area datasets. The results showed that remote sensing enables to monitor temporal variations of water level and volume of reservoirs.

11p cothumenhmong8 05-11-2020 14 2   Download

This study focuses on the environmental pressure of waste generated from pig farming in Yen Dung district. Terrain analysis of the digital elevation model (DEM) was used to delineate the sub-basin map where pollutants accumulated.

11p viino2711 08-05-2020 33 1   Download

Watersheds are natural hydrological entities that cover a specific aerial expanse of land surface from which the rainfall runoff flows to a defined drain, channel, stream or river at any particular point. In the last two decades, watershed management has gained the top most priority in water resources sector necessitating delineation of watersheds upto mini watershed level in order to take up watershed development and management programmes. Prerequisite for watershed management is knowledge of watershed characteristics like slope, relief, aerial extent and drainage networks.

11p nguaconbaynhay4 22-03-2020 32 1   Download

The biofouling issue is a tenacious issue throughout the history of aquaculture farming in the world, however it has elevated in priority as labour and electricity costs have arisen in recent years. Besides, fouling development is frequently fast on the grounds that the waters encompassing aquaculture activities are enhanced by natural and inorganic squanders (uneaten food, fecal and excretory material) created by high-density fish populations.

12p cothumenhmong3 22-02-2020 18 1   Download

Runoff estimation is a key factor in the design of soil and water conservation structures to prevent land degradation and erosion. In the present study, the Soil and Water Assessment Tool (SWAT) model was used to estimate the runoff in Pindwara watershed situated in the Sirohi district of Rajasthan and spanning over an area of about 1428 km2 . Temporal weather data of rainfall and temperature, digital elevation models, soil data, land use land cover imagery was provided to the model as input to estimate runoff at the watershed outlet.

10p chauchaungayxua3 07-02-2020 21 2   Download

Drought is an abnormal condition resulting due to a decrease in rainfall. The occurrence of drought is unpredictable and causes unprecedented damage to the production of crop and livelihood. The present study has been conducted to assess the meteorological drought situation in Ujjain district using Effective Drought Index (EDI). For assessment six rain gauge station situated in the study area is selected. Out of which station namely Barnagar, Ghatiya and Tarana have maximum extreme drought event with 8, 7, and 3 respectively.

9p quenchua2 18-12-2019 13 0   Download

The major agro-industrial effluents of sugarcane and starch industries pose a serious threat to surface waters. Their disposal in the River Nile around Cairo city transitionally affected the microbial load. In situ bacterial enrichment (50–180%) was reported and gradually diminished downstream; the lateral not vertical effect of the effluent disposal was evident. Disposed effluents increased BOD and COD, and then progressively decreased downstream. Ammoniacal N was elevated, indicating active biological ammonification and in situ biodegradability of the effluents.

11p kethamoi1 20-11-2019 16 2   Download

Wadi El Raiyan is a great depression located southwest of Cairo in the Western Desert of Egypt. Lake Qarun, located north of the study area, is a closed basin with a high evaporation rate. The source of water in the lake is agricultural and municipal drainage from the El Faiyum province. In 1973, Wadi El Raiyan was connected with the agricultural wastewater drainage system of the Faiyum province and received water that exceeded the capacity of Lake Qarun. Two hydrogeological regimes have been established in the area: (i) higher cultivated land and (ii) lower Wadi El Raiyan depression lakes.

14p trinhthamhodang1 16-11-2019 19 0   Download

e elevated water table is a prominent feature of the Florida ecosystem. Frequent surface appearance of the aquifer has produced a patchwork of wetlands, streams, rivers and lakes.This presents an issue for the efficient extraction of the phosphate rock deposit by draglines. If the opencast pit contains water, dragline operators have difficulty identifying the boundary between the ore and overburden, potentially result- ing in the loss of ore or dilution by barren rock.

68p tieuyeuquai456 05-10-2012 66 3   Download

Wet processing of textiles uses large quantities of water, and electrical and thermal energy. Most of these processes involve the use of chemicals as assisting, accelerating or retarding their rates and are carried out at elevated temperatures to transfer mass from processing liquid medium across the surface of textile material in a reasonable time. So, we can use some natural materials and some physical tools to reduce the chemicals, water, energy and pollution.

132p nhatkyvodanh 24-07-2012 80 15   Download