ANALYSIS OF TREND OF WATER LEVEL: IN CASE OF LAKE TANA, ETHIOPIA
Lakes are integrator of environmental changes occurring at a regional to global scale and present a high variety of behaviors on a variety of time scale. Their crucial importance as water stocks and retaining given the significant environmental changes occurring worldwide at many anthropocentric le...
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| Format: | Article |
| Language: | English |
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EL-AYACHI
2020-11-01
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| Series: | African Journal on Land Policy and Geospatial Sciences |
| Subjects: | |
| Online Access: | https://revues.imist.ma/index.php/AJLP-GS/article/view/18504 |
| _version_ | 1797341842983878656 |
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| author | Sintayehu Abie Diress Tulu Besha Bedada |
| author_facet | Sintayehu Abie Diress Tulu Besha Bedada |
| author_sort | Sintayehu Abie Diress |
| collection | DOAJ |
| description |
Lakes are integrator of environmental changes occurring at a regional to global scale and present a high variety of behaviors on a variety of time scale. Their crucial importance as water stocks and retaining given the significant environmental changes occurring worldwide at many anthropocentric levels has increased the necessity of monitoring all its morphodynamic characteristics i.e. water level, surface area and volume. In this paper a 57 years water level data obtained by combining Bahir Dar gauge station and satellite altimetry were analyzed for detection of trend using the non-parametric Mann-Kendall test in combination with the trend-free pre-whitening approach for correcting time series data sets for serial correlation. Sen’s slope method, a non-parametric alternative for estimating a slope for a univariate time series was used to determine the magnitude of trends.
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| first_indexed | 2024-03-08T10:24:57Z |
| format | Article |
| id | doaj.art-b5d58b23805247ada5dd8531ea18664f |
| institution | Directory Open Access Journal |
| issn | 2657-2664 |
| language | English |
| last_indexed | 2024-03-08T10:24:57Z |
| publishDate | 2020-11-01 |
| publisher | EL-AYACHI |
| record_format | Article |
| series | African Journal on Land Policy and Geospatial Sciences |
| spelling | doaj.art-b5d58b23805247ada5dd8531ea18664f2024-01-27T08:13:04ZengEL-AYACHIAfrican Journal on Land Policy and Geospatial Sciences2657-26642020-11-013510.48346/IMIST.PRSM/ajlp-gs.v3i3.18504ANALYSIS OF TREND OF WATER LEVEL: IN CASE OF LAKE TANA, ETHIOPIASintayehu Abie Diress0Tulu Besha BedadaWoldia University Lakes are integrator of environmental changes occurring at a regional to global scale and present a high variety of behaviors on a variety of time scale. Their crucial importance as water stocks and retaining given the significant environmental changes occurring worldwide at many anthropocentric levels has increased the necessity of monitoring all its morphodynamic characteristics i.e. water level, surface area and volume. In this paper a 57 years water level data obtained by combining Bahir Dar gauge station and satellite altimetry were analyzed for detection of trend using the non-parametric Mann-Kendall test in combination with the trend-free pre-whitening approach for correcting time series data sets for serial correlation. Sen’s slope method, a non-parametric alternative for estimating a slope for a univariate time series was used to determine the magnitude of trends. https://revues.imist.ma/index.php/AJLP-GS/article/view/18504Satellite AltimetryMann Kendell testSen Slope estimateTana basin |
| spellingShingle | Sintayehu Abie Diress Tulu Besha Bedada ANALYSIS OF TREND OF WATER LEVEL: IN CASE OF LAKE TANA, ETHIOPIA African Journal on Land Policy and Geospatial Sciences Satellite Altimetry Mann Kendell test Sen Slope estimate Tana basin |
| title | ANALYSIS OF TREND OF WATER LEVEL: IN CASE OF LAKE TANA, ETHIOPIA |
| title_full | ANALYSIS OF TREND OF WATER LEVEL: IN CASE OF LAKE TANA, ETHIOPIA |
| title_fullStr | ANALYSIS OF TREND OF WATER LEVEL: IN CASE OF LAKE TANA, ETHIOPIA |
| title_full_unstemmed | ANALYSIS OF TREND OF WATER LEVEL: IN CASE OF LAKE TANA, ETHIOPIA |
| title_short | ANALYSIS OF TREND OF WATER LEVEL: IN CASE OF LAKE TANA, ETHIOPIA |
| title_sort | analysis of trend of water level in case of lake tana ethiopia |
| topic | Satellite Altimetry Mann Kendell test Sen Slope estimate Tana basin |
| url | https://revues.imist.ma/index.php/AJLP-GS/article/view/18504 |
| work_keys_str_mv | AT sintayehuabiediress analysisoftrendofwaterlevelincaseoflaketanaethiopia AT tulubeshabedada analysisoftrendofwaterlevelincaseoflaketanaethiopia |