Kaolinite Deposition Dynamics and Streambed Clogging During Bedform Migration Under Losing and Gaining Flow Conditions
Clogging of streambeds due to clay deposition influences the stream‐subsurface exchange flux and thus directly modulates hyporheic ecological and biogeochemical processes. Clogging of sandy streambeds has previously been studied under losing and gaining flows and during streambed movement, but not w...
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| Veröffentlicht in: | Water resources research 2023-09, Vol.59 (9) |
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| creator | Shimony, T. Teitelbaum, Y. Cifuentes, E. Saavedra Dallmann, J. Phillips, C. B. Packman, A. I. Arnon, S. |
| description | Clogging of streambeds due to clay deposition influences the stream‐subsurface exchange flux and thus directly modulates hyporheic ecological and biogeochemical processes. Clogging of sandy streambeds has previously been studied under losing and gaining flows and during streambed movement, but not when these two flow conditions coincided. We conducted flume experiments to quantify the combined effect of moving bedforms and losing or gaining flows on kaolinite deposition and streambed clogging. The experiments were conducted by adding pulses of kaolinite in a flume packed with sand under a stream water velocity of 25 cm/s. We measured the deposition rates, dynamics of hyporheic exchange flux (HEF) and vertical hydraulic conductivity (
K
v
), and the vertical distribution of kaolinite at the end of the experiments under two losing and two gaining flows (Darcy velocity of 10 and 20 cm/day). Kaolinite deposition led to clogging and reduction in
K
v
and HEF under all flow conditions. Deposition occurred faster under losing flow conditions than under gaining flow conditions. However, the changes in
K
v
and HEF were similar under losing and gaining flow conditions for similar kaolinite concentrations in the bed. Our results indicate that the deposition patterns of kaolinite were more influenced by bedform movement than by losing or gaining flow conditions, which is markedly different from the behavior observed under losing and gaining conditions for stationary bedforms. This implies that bedform morphodynamics control local‐scale clogging of sandy streambeds and should be accounted for when studying the hydrology of catchments at larger scales.
Bed movement had a greater influence on kaolinite deposition patterns than either losing or gaining flow conditions
Kaolinite accumulated in the bed much more quickly under losing conditions than gaining conditions, causing rapid clogging of the bed
Hydraulic conductivity and hyporheic flux depended on kaolinite content in the bed and were similar under losing and gaining conditions |
| doi_str_mv | 10.1029/2023WR034792 |
| format | Article |
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K
v
), and the vertical distribution of kaolinite at the end of the experiments under two losing and two gaining flows (Darcy velocity of 10 and 20 cm/day). Kaolinite deposition led to clogging and reduction in
K
v
and HEF under all flow conditions. Deposition occurred faster under losing flow conditions than under gaining flow conditions. However, the changes in
K
v
and HEF were similar under losing and gaining flow conditions for similar kaolinite concentrations in the bed. Our results indicate that the deposition patterns of kaolinite were more influenced by bedform movement than by losing or gaining flow conditions, which is markedly different from the behavior observed under losing and gaining conditions for stationary bedforms. This implies that bedform morphodynamics control local‐scale clogging of sandy streambeds and should be accounted for when studying the hydrology of catchments at larger scales.
Bed movement had a greater influence on kaolinite deposition patterns than either losing or gaining flow conditions
Kaolinite accumulated in the bed much more quickly under losing conditions than gaining conditions, causing rapid clogging of the bed
Hydraulic conductivity and hyporheic flux depended on kaolinite content in the bed and were similar under losing and gaining conditions</description><identifier>ISSN: 0043-1397</identifier><identifier>EISSN: 1944-7973</identifier><identifier>DOI: 10.1029/2023WR034792</identifier><language>eng</language><publisher>Washington: John Wiley & Sons, Inc</publisher><subject>Bed forms ; Bedforms ; Catchment area ; Catchments ; Deposition ; Flow ; Flow control ; Flumes ; Hydraulic conductivity ; Hydrology ; Kaolinite ; Rivers ; Sedimentary structures ; Streambeds ; Velocity ; Vertical distribution ; Water velocity</subject><ispartof>Water resources research, 2023-09, Vol.59 (9)</ispartof><rights>2023. This article is published under http://creativecommons.org/licenses/by-nc/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c258t-8832baa42aa11cef56393652cd43420b1e4a666288c6921ea8ffd9e255f0bcf13</cites><orcidid>0000-0003-3172-4549 ; 0000-0002-7109-8979 ; 0000-0001-9950-2497 ; 0000-0003-4871-8639 ; 0000-0003-1242-4815</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Shimony, T.</creatorcontrib><creatorcontrib>Teitelbaum, Y.</creatorcontrib><creatorcontrib>Cifuentes, E. Saavedra</creatorcontrib><creatorcontrib>Dallmann, J.</creatorcontrib><creatorcontrib>Phillips, C. B.</creatorcontrib><creatorcontrib>Packman, A. I.</creatorcontrib><creatorcontrib>Arnon, S.</creatorcontrib><title>Kaolinite Deposition Dynamics and Streambed Clogging During Bedform Migration Under Losing and Gaining Flow Conditions</title><title>Water resources research</title><description>Clogging of streambeds due to clay deposition influences the stream‐subsurface exchange flux and thus directly modulates hyporheic ecological and biogeochemical processes. Clogging of sandy streambeds has previously been studied under losing and gaining flows and during streambed movement, but not when these two flow conditions coincided. We conducted flume experiments to quantify the combined effect of moving bedforms and losing or gaining flows on kaolinite deposition and streambed clogging. The experiments were conducted by adding pulses of kaolinite in a flume packed with sand under a stream water velocity of 25 cm/s. We measured the deposition rates, dynamics of hyporheic exchange flux (HEF) and vertical hydraulic conductivity (
K
v
), and the vertical distribution of kaolinite at the end of the experiments under two losing and two gaining flows (Darcy velocity of 10 and 20 cm/day). Kaolinite deposition led to clogging and reduction in
K
v
and HEF under all flow conditions. Deposition occurred faster under losing flow conditions than under gaining flow conditions. However, the changes in
K
v
and HEF were similar under losing and gaining flow conditions for similar kaolinite concentrations in the bed. Our results indicate that the deposition patterns of kaolinite were more influenced by bedform movement than by losing or gaining flow conditions, which is markedly different from the behavior observed under losing and gaining conditions for stationary bedforms. This implies that bedform morphodynamics control local‐scale clogging of sandy streambeds and should be accounted for when studying the hydrology of catchments at larger scales.
Bed movement had a greater influence on kaolinite deposition patterns than either losing or gaining flow conditions
Kaolinite accumulated in the bed much more quickly under losing conditions than gaining conditions, causing rapid clogging of the bed
Hydraulic conductivity and hyporheic flux depended on kaolinite content in the bed and were similar under losing and gaining conditions</description><subject>Bed forms</subject><subject>Bedforms</subject><subject>Catchment area</subject><subject>Catchments</subject><subject>Deposition</subject><subject>Flow</subject><subject>Flow control</subject><subject>Flumes</subject><subject>Hydraulic conductivity</subject><subject>Hydrology</subject><subject>Kaolinite</subject><subject>Rivers</subject><subject>Sedimentary structures</subject><subject>Streambeds</subject><subject>Velocity</subject><subject>Vertical distribution</subject><subject>Water velocity</subject><issn>0043-1397</issn><issn>1944-7973</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNpNkE1LwzAYx4MoOKc3P0DAq9W8NW2O2rkpTgR1eCxpm5SMNplJq-zbm20ePP0feP4v8APgEqMbjIi4JYjQzzdEWSbIEZhgwViSiYwegwlCjCaYiuwUnIWwRgizlGcT8P0sXWesGRScqY0LZjDOwtnWyt7UAUrbwPfBK9lXqoFF59rW2BbORr-Te9Vo53v4Ylov98GVbZSHy9gT37vwQsbyeM879wMLZ5v9QDgHJ1p2QV386RSs5g8fxWOyfF08FXfLpCZpPiR5TkklJSNSYlwrnXIqKE9J3TDKCKqwYpJzTvK85oJgJXOtG6FImmpU1RrTKbg69G68-xpVGMq1G72NkyXJY4RFRjy6rg-u2rsQvNLlxpte-m2JUbkjW_4nS38BTK5r8w</recordid><startdate>202309</startdate><enddate>202309</enddate><creator>Shimony, T.</creator><creator>Teitelbaum, Y.</creator><creator>Cifuentes, E. 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Saavedra</au><au>Dallmann, J.</au><au>Phillips, C. B.</au><au>Packman, A. I.</au><au>Arnon, S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Kaolinite Deposition Dynamics and Streambed Clogging During Bedform Migration Under Losing and Gaining Flow Conditions</atitle><jtitle>Water resources research</jtitle><date>2023-09</date><risdate>2023</risdate><volume>59</volume><issue>9</issue><issn>0043-1397</issn><eissn>1944-7973</eissn><abstract>Clogging of streambeds due to clay deposition influences the stream‐subsurface exchange flux and thus directly modulates hyporheic ecological and biogeochemical processes. Clogging of sandy streambeds has previously been studied under losing and gaining flows and during streambed movement, but not when these two flow conditions coincided. We conducted flume experiments to quantify the combined effect of moving bedforms and losing or gaining flows on kaolinite deposition and streambed clogging. The experiments were conducted by adding pulses of kaolinite in a flume packed with sand under a stream water velocity of 25 cm/s. We measured the deposition rates, dynamics of hyporheic exchange flux (HEF) and vertical hydraulic conductivity (
K
v
), and the vertical distribution of kaolinite at the end of the experiments under two losing and two gaining flows (Darcy velocity of 10 and 20 cm/day). Kaolinite deposition led to clogging and reduction in
K
v
and HEF under all flow conditions. Deposition occurred faster under losing flow conditions than under gaining flow conditions. However, the changes in
K
v
and HEF were similar under losing and gaining flow conditions for similar kaolinite concentrations in the bed. Our results indicate that the deposition patterns of kaolinite were more influenced by bedform movement than by losing or gaining flow conditions, which is markedly different from the behavior observed under losing and gaining conditions for stationary bedforms. This implies that bedform morphodynamics control local‐scale clogging of sandy streambeds and should be accounted for when studying the hydrology of catchments at larger scales.
Bed movement had a greater influence on kaolinite deposition patterns than either losing or gaining flow conditions
Kaolinite accumulated in the bed much more quickly under losing conditions than gaining conditions, causing rapid clogging of the bed
Hydraulic conductivity and hyporheic flux depended on kaolinite content in the bed and were similar under losing and gaining conditions</abstract><cop>Washington</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1029/2023WR034792</doi><orcidid>https://orcid.org/0000-0003-3172-4549</orcidid><orcidid>https://orcid.org/0000-0002-7109-8979</orcidid><orcidid>https://orcid.org/0000-0001-9950-2497</orcidid><orcidid>https://orcid.org/0000-0003-4871-8639</orcidid><orcidid>https://orcid.org/0000-0003-1242-4815</orcidid><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0043-1397 |
| ispartof | Water resources research, 2023-09, Vol.59 (9) |
| issn | 0043-1397 1944-7973 |
| language | eng |
| recordid | cdi_proquest_journals_2869241946 |
| source | Wiley-Blackwell AGU Digital Library; Wiley Online Library All Journals |
| subjects | Bed forms Bedforms Catchment area Catchments Deposition Flow Flow control Flumes Hydraulic conductivity Hydrology Kaolinite Rivers Sedimentary structures Streambeds Velocity Vertical distribution Water velocity |
| title | Kaolinite Deposition Dynamics and Streambed Clogging During Bedform Migration Under Losing and Gaining Flow Conditions |
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