scholarly journals Changes in Water Surface Area of the Lake in the Steppe Region of Mongolia: A Case Study of Ugii Nuur Lake, Central Mongolia

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1470
Author(s):  
Erdenesukh Sumiya ◽  
Batsuren Dorjsuren ◽  
Denghua Yan ◽  
Sandelger Dorligjav ◽  
Hao Wang ◽  
...  
Keyword(s):  
Surface Area ◽  
Global Climate Change ◽  
Lake Water ◽  
Water Surface ◽  
Global Climate ◽  
Lake Surface ◽  
Central Mongolia ◽  
Water Surface Area ◽  
Annual Evaporation ◽  
Lake Surface Area

The Ugii Nuur Lake is not only one of the small hydrologically closed lakes located in the Orkhon River Basin in Central Mongolia but also the most vulnerable area for global climate change. Therefore, this study aims to investigate the impacts of recent global climate change on the water surface area. The data we analyzed were various measured hydro-meteorological variables of the lake basin and the lake surface area, which was estimated from Landsat series satellite data from 1986 to 2018. The methods we used were Mann-Kendall (MK), Innovative trend analysis method (ITAM), Sen’s slope estimator test, correlation, and regression analysis. The variation of lake water surface area has a strong positive correlation with the change of the lake water level (r = 0.95). The Mann-Kendall trend analysis has indicated that under a significant decrease in total annual precipitation ( Z   = −0.902) and inflow river discharge ( Z   = −5.392) and a considerable increase in total annual evaporation ( Z = 4.385) and annual average air temperature ( Z   = 4.595), the surface area of the Ugii Nuur Lake has decreased sharply ( Z = −6.021). The total annual evaporation (r = −0.64) and inflow river discharge (r = 0.67) were the essential hydro-meteorological factors affecting the surface area of the Ugii Nuur Lake. The lake surface area decreased by 13.5% in 2018 compared with 1986. In the near future, it is vital to conduct scientific studies considering the volume of lake water, groundwater, and the anthropogenic impact.

scholarly journals Changes in the surface area of lakes in the Gwda River basin

2015 ◽  
Vol 14 (3) ◽  
pp. 121-129
Author(s):  
Kubiak-Wójcicka Katarzyna ◽  
Izabela Lewandowska
Keyword(s):  
Twentieth Century ◽  
Surface Area ◽  
River Basin ◽  
Water Surface ◽  
General Trend ◽  
Topographic Maps ◽  
Lake Surface ◽  
Water Surface Area ◽  
Starting Point ◽  
Lake Surface Area

Abstract This paper presents lake surface area changes that have taken place in the Gwda River basin. The studies were conducted on the basis of the cartographic materials released since the beginning of the twentieth century until the present times. The starting point was the area of all lakes greater than 1 ha which are present on the MPHP map from 2010. The assessment of the changes in the surface area of lakes in the Gwda River basin during approximately the last 100 years was possible thanks to the use of German topographic maps, so called Messtischblatt, at a scale of 1: 25 000 released between 1919 and 1944. The area of all the studied lakes has decreased by 465.09 ha (from 12783.62 ha at the beginning of the twentieth century to 12318.53 ha at the present time). Despite the general trend of lake atrophy, in particular cases one may observe an increase in the water surface area. This is the result of hydrotechnical works leading to river and lake damming, which in turn hampers the pace of atrophy.

scholarly journals Changes in the water surface area of Lakes Udzierz and Mątasek in the light of cartographic materials

2012 ◽  
Vol 12 (4) ◽  
pp. 169-177 ◽  
Author(s):  
Andrzej Fabich ◽  
Monika Kwidzińska
Keyword(s):  
Surface Area ◽  
Water Surface ◽  
Anthropogenic Impact ◽  
Average Rate ◽  
Topographic Maps ◽  
Lake Surface ◽  
Water Surface Area ◽  
Lake Surface Area ◽  
The One ◽  
Lake Waters

AbstractThe paper presents the changes in the water surface area of Lakes Udzierz and Mątasek located in the headwaters of the catchment of the River Mątawa (tributary of the River Vistula). The assessment of the rate of changes was based on Polish and German topographic maps as well as orthophotomaps. The analysed lakes turned out to be two of the fastest disappearing Polish lakes. In the last century (1910-2010) the water surface area of Lake Udzierz decreased from 148.87 to 69.60 ha and that of Lake Mątasek from 29.5 to 0.64 ha. The average rate of loss of the lake surface area during this period was from 0.53 to 0.98% per annum. Such drastic morphometric changes in the studied lakes are, on the one hand, mainly due to poorly conducted drainage and, on the other hand, the eutrophication of the lake waters intensified by the anthropogenic impact.

EWOLUCJA POWIERZCHNI I RZĘDNEJ ZWIERCIADŁA WODY JEZIORA MIEDZNO

2019 ◽  
Vol XII ◽  
pp. 1-1
Author(s):  
Zygmunt Miatkowski ◽  
Paweł Pepliński
Keyword(s):  
Water Level ◽  
19Th Century ◽  
Lake Water ◽  
Water Surface ◽  
Lake Area ◽  
Lake Surface ◽  
Lake Water Level ◽  
Level Elevation ◽  
Lake Surface Area ◽  
The 19Th Century

The changes in area size and elevation of water surface of the Miedzno lake were studied in the paper. The study was carried out on the basis of the analysis of archival cartographic materials, technical documentations and published works. From the first half of the 19th century the Miedzno lake area was about 125 - 135 ha and the lake water level elevation approx. 85.0 m a.s.l. In the period from the mid-19th century to the 1990s the Miedzno lake water table elevation decreased to about 81.0 m a.s.l. and the lake surface area decreased to approx. 8-10 ha.

scholarly journals MONITORING OF LAKE ECOSYSTEM PARAMETER USING LANDSAT DATA (A CASE STUDY: LAKE RAWA PENING)

2017 ◽  
Vol 12 (1) ◽  
pp. 71 ◽  
Author(s):  
Bambang Trisakti ◽  
Nana Suwargana ◽  
Joko Santo Cahyono
Keyword(s):  
Surface Area ◽  
Lake Water ◽  
Water Hyacinth ◽  
Water Surface ◽  
Atmospheric Correction ◽  
Water Clarity ◽  
Likelihood Method ◽  
Lake Ecosystem ◽  
Water Surface Area ◽  
Water Classification

Most lakes in Indonesia have suffered (decrease in quality) caused by land conversion in the catchment area, soil erosion, and water pollution from agriculture and households. This study utilizes remote sensing data to monitor several parameters used as ecosystem status assessors in accordance with the guidelines of Lake Ecosystem Management provided by the Ministry of Environment. The monitoring was done at Lake Rawa Pening using Landsat TM/ETM+ satellite data over the period of 2000-2013. The data standardization was done for sun angle correction and also atmospheric correction by removing dark pixels using histogram adjustment method. RGB color composites (R: NIR + SWIR, G: NIR, B: NIR-RED) were used for water hyacinth identification; thus, the lake water surface area can be delineated. Further samples were collected for water hyacinth and water classification with Maximum Likelihood method. Total Suspended Matter (TSM) by Doxaran model and the water clarity from field measurement was correlated to build water clarity algorithm. The results show that Lake Rawa Pening was deterioting in term of quality during the period of 2000-2013; it can be seen from the dynamic rate of the shrinkage and the expansion of the lake water surface area, the uncontrolled distribution of water hyacinth which it covered 45% of the lake water surface area in 2013, the increased of TSM concentration, and the decreased of water clarity. Most parts of Rawa Pening’s water have clarity less than 2.5 m which indicated that the thropic status is hypertrophic class.

Scaling relationships between lake surface area and catchment area

2020 ◽  
Vol 82 (3) ◽  
Author(s):  
Jonathan A. Walter ◽  
Rachel Fleck ◽  
Michael L. Pace ◽  
Grace M. Wilkinson
Keyword(s):  
Surface Area ◽  
Catchment Area ◽  
Lake Surface ◽  
Scaling Relationships ◽  
Lake Surface Area

scholarly journals Simplified Lake Surface Area Method for the Minimum Ecological Water Level of Lakes and Wetlands

Water ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 1056 ◽  
Author(s):  
Songpu Shang ◽  
Songhao Shang
Keyword(s):  
Water Level ◽  
Surface Area ◽  
Lake Level ◽  
Lake Ecosystem ◽  
Lake Surface ◽  
Area Method ◽  
Ecosystem Protection ◽  
Lake Morphology ◽  
Lake Surface Area ◽  
Ecological Water Level

The determination of the rational minimum ecological water level is the base for the protection of ecosystems in shrinking lakes and wetlands. Based on the lake surface area method, a simplified lake surface area method was proposed to define the minimum ecological lake level from the lake level-logarithm of the surface area curve. The curve slope at the minimum ecological lake level is the ratio of the maximum lake storage to the maximum surface area. For most practical cases when the curve cannot be expressed as a simple analytical function, the minimum ecological lake level can be determined numerically using the weighted sum method for an equivalent multi-objective optimization model that balances ecosystem protection and water use. This method requires fewer data of lake morphology and is simple to compute. Therefore, it is more convenient to use this method in the assessment of the ecological lake level. The proposed method was used to determine the minimum ecological water level for one freshwater lake, one saltwater lake, and one wetland in China. The results can be used in the lake ecosystem protection planning and the rational use of water resources in the lake or wetland basins.

Forecasting future changes in Manzala Lake surface area by considering variations in land use and land cover using remote sensing approach

2018 ◽  
Vol 11 (5) ◽  
Author(s):  
Hickmat Hossen ◽  
Mona G. Ibrahim ◽  
Wael Elham Mahmod ◽  
Abdelazim Negm ◽  
Kazuo Nadaoka ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Land Use ◽  
Land Cover ◽  
Surface Area ◽  
Lake Surface ◽  
Lake Surface Area
Sign in / Sign up

Export Citation Format

Share Document