Constraints on Water Reservoir Lifetimes From Catchment‐Wide 10Be Erosion Rates—A Case Study From Western Turkey
Constraints on Water Reservoir Lifetimes From Catchment‐Wide 10Be Erosion Rates—A Case Study From Western Turkey
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流域范围内 10Be 侵蚀率对水库寿命的限制 - 土耳其西部案例研究
DOI:
10.1002/2017wr020594
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发表时间:
2017
影响因子:
5.4
通讯作者:
Christl
中科院分区:
文献类型:
--
作者:
Heineke;Hetzel;Christl
The functionality and retention capacity of water reservoirs is generally impaired by upstream erosion and reservoir sedimentation, making a reliable assessment of erosion indispensable to estimate reservoir lifetimes. Widely used river gauging methods may underestimate sediment yield, because they do not record rare, high‐magnitude events and may underestimate bed load transport. Hence, reservoir lifetimes calculated from short‐term erosion rates should be regarded as maximum values. We propose that erosion rates from cosmogenic10Be, which commonly integrate over hundreds to thousands of years, are useful to complement short‐term sediment yield estimates and should be employed to estimate minimum reservoir lifetimes. Here we present10Be erosion rates for the drainage basins of six water reservoirs in Western Turkey, which are located in a tectonically active region with easily erodible bedrock. Our10Be erosion rates for these catchments are high, ranging from ∼170 to ∼1,040 t/km2/yr. When linked to reservoir volumes, they yield minimum reservoir lifetimes between 25 ± 5 and 1,650 ± 360 years until complete filling, with four reservoirs having minimum lifespans of ≤110 years. In a neighboring region with more resistant bedrock and less tectonic activity, we obtain much lower catchment‐wide10Be erosion rates of ∼33 to ∼95 t/km2/yr, illustrating that differences in lithology and tectonic boundary conditions can cause substantial variations in erosion even at a spatial scale of only ∼50 km. In conclusion, we suggest that both short‐term sediment yield estimates and10Be erosion rates should be employed to predict the lifetimes of reservoirs.
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影响因子:
3.2
作者:
G. Meyer;J. Pierce;S. Wood;A. Jull
通讯作者:
G. Meyer;J. Pierce;S. Wood;A. Jull
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
O. Candan;O. Dora;Roland Oberh Kaya
通讯作者:
Roland Oberh Kaya
DOI:
--
发表时间:
2000
期刊:
Geological Society Special Publication
影响因子:
--
作者:
Y. Yılmaz;Ş. Genç;F. Gürer;M. Bozcu;Kamil Yılmaz;Z. Karacık;Ş. Altunkaynak;A. Elmas
通讯作者:
A. Elmas
DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
A. Şengör;M. Satır;R. Akkök
通讯作者:
R. Akkök
影响因子:
3.3
作者:
L. Reinhardt;T. Hoey;Timothy T. Barrows;T. Dempster;P. Bishop;L. Fifield
通讯作者:
L. Fifield