Variaciones de la conductividad hidráulica vertical en el cauce de un río antes y después de una estación de inundaciones

Translated title of the contribution: Variations of streambed vertical hydraulic conductivity before and after a flood season

Guangdong Wu, Longcang Shu, Chengpeng Lu, Xunhong Chen, Xiao Zhang, Emmanuel K. Appiah-Adjei, Jingsi Zhu

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The change of vertical hydraulic conductivity (Kv) before and after a flood season is crucial in understanding the long-term temporal variation of streambed permeability. Therefore, in this study, a detailed Kvfield investigation was conducted at an in-channel site within the Dawen River, China, before and after a flood season. In-situ falling-head permeameter tests were performed for the determination of Kv. The tests were conducted using a 10 × 10 grid, at five different depths. In total, 871 valid Kvvalues from layers 1–5 were obtained. The Kruskal-Wallis test on these Kvvalues before and after the flood season shows they belonged to different populations. The sediments before the flood season primarily consisted of sand and gravel, whereas after the flood season, patchy distribution of silt/clay occurred in the sandy streambed and silt/clay content increased with the increasing depth; under the losing condition during flooding, downward movement of water brought fine particles into the coarse sediments, partially silting the pores. Accordingly, the Kvvalues after the flood season had a smaller mean and median, and a higher level of heterogeneity, compared to those before the flood season. Additionally, the distribution pattern in Kvacross the stream differed before and after flood season; after the flood season, there was an increasing trend in Kvfrom the south bank to the north bank. Overall, the contrasts of Kvbefore and after the flood season were predominantly subject to the infiltration of fine particles.

Original languageSpanish
Pages (from-to)1603-1615
Number of pages13
JournalHydrogeology Journal
Volume23
Issue number7
DOIs
StatePublished - Nov 1 2015

Fingerprint

hydraulic conductivity
silt
clay
permeameter
sand and gravel
sediment
temporal variation
infiltration
flooding
permeability
river
test

Keywords

  • China
  • Groundwater statistics
  • Groundwater/surface-water relations
  • Temporal variability
  • Vertical hydraulic conductivity

ASJC Scopus subject areas

  • Water Science and Technology
  • Earth and Planetary Sciences (miscellaneous)

Cite this

Variaciones de la conductividad hidráulica vertical en el cauce de un río antes y después de una estación de inundaciones. / Wu, Guangdong; Shu, Longcang; Lu, Chengpeng; Chen, Xunhong; Zhang, Xiao; Appiah-Adjei, Emmanuel K.; Zhu, Jingsi.

In: Hydrogeology Journal, Vol. 23, No. 7, 01.11.2015, p. 1603-1615.

Research output: Contribution to journalArticle

Wu, Guangdong ; Shu, Longcang ; Lu, Chengpeng ; Chen, Xunhong ; Zhang, Xiao ; Appiah-Adjei, Emmanuel K. ; Zhu, Jingsi. / Variaciones de la conductividad hidráulica vertical en el cauce de un río antes y después de una estación de inundaciones. In: Hydrogeology Journal. 2015 ; Vol. 23, No. 7. pp. 1603-1615.
@article{6159d7e6123a4a2b9f058cee12c83dac,
title = "Variaciones de la conductividad hidr{\'a}ulica vertical en el cauce de un r{\'i}o antes y despu{\'e}s de una estaci{\'o}n de inundaciones",
abstract = "The change of vertical hydraulic conductivity (Kv) before and after a flood season is crucial in understanding the long-term temporal variation of streambed permeability. Therefore, in this study, a detailed Kvfield investigation was conducted at an in-channel site within the Dawen River, China, before and after a flood season. In-situ falling-head permeameter tests were performed for the determination of Kv. The tests were conducted using a 10 × 10 grid, at five different depths. In total, 871 valid Kvvalues from layers 1–5 were obtained. The Kruskal-Wallis test on these Kvvalues before and after the flood season shows they belonged to different populations. The sediments before the flood season primarily consisted of sand and gravel, whereas after the flood season, patchy distribution of silt/clay occurred in the sandy streambed and silt/clay content increased with the increasing depth; under the losing condition during flooding, downward movement of water brought fine particles into the coarse sediments, partially silting the pores. Accordingly, the Kvvalues after the flood season had a smaller mean and median, and a higher level of heterogeneity, compared to those before the flood season. Additionally, the distribution pattern in Kvacross the stream differed before and after flood season; after the flood season, there was an increasing trend in Kvfrom the south bank to the north bank. Overall, the contrasts of Kvbefore and after the flood season were predominantly subject to the infiltration of fine particles.",
keywords = "China, Groundwater statistics, Groundwater/surface-water relations, Temporal variability, Vertical hydraulic conductivity",
author = "Guangdong Wu and Longcang Shu and Chengpeng Lu and Xunhong Chen and Xiao Zhang and Appiah-Adjei, {Emmanuel K.} and Jingsi Zhu",
year = "2015",
month = "11",
day = "1",
doi = "10.1007/s10040-015-1275-9",
language = "Spanish",
volume = "23",
pages = "1603--1615",
journal = "Hydrogeology Journal",
issn = "1431-2174",
publisher = "Springer Heidelberg",
number = "7",

}

TY - JOUR

T1 - Variaciones de la conductividad hidráulica vertical en el cauce de un río antes y después de una estación de inundaciones

AU - Wu, Guangdong

AU - Shu, Longcang

AU - Lu, Chengpeng

AU - Chen, Xunhong

AU - Zhang, Xiao

AU - Appiah-Adjei, Emmanuel K.

AU - Zhu, Jingsi

PY - 2015/11/1

Y1 - 2015/11/1

N2 - The change of vertical hydraulic conductivity (Kv) before and after a flood season is crucial in understanding the long-term temporal variation of streambed permeability. Therefore, in this study, a detailed Kvfield investigation was conducted at an in-channel site within the Dawen River, China, before and after a flood season. In-situ falling-head permeameter tests were performed for the determination of Kv. The tests were conducted using a 10 × 10 grid, at five different depths. In total, 871 valid Kvvalues from layers 1–5 were obtained. The Kruskal-Wallis test on these Kvvalues before and after the flood season shows they belonged to different populations. The sediments before the flood season primarily consisted of sand and gravel, whereas after the flood season, patchy distribution of silt/clay occurred in the sandy streambed and silt/clay content increased with the increasing depth; under the losing condition during flooding, downward movement of water brought fine particles into the coarse sediments, partially silting the pores. Accordingly, the Kvvalues after the flood season had a smaller mean and median, and a higher level of heterogeneity, compared to those before the flood season. Additionally, the distribution pattern in Kvacross the stream differed before and after flood season; after the flood season, there was an increasing trend in Kvfrom the south bank to the north bank. Overall, the contrasts of Kvbefore and after the flood season were predominantly subject to the infiltration of fine particles.

AB - The change of vertical hydraulic conductivity (Kv) before and after a flood season is crucial in understanding the long-term temporal variation of streambed permeability. Therefore, in this study, a detailed Kvfield investigation was conducted at an in-channel site within the Dawen River, China, before and after a flood season. In-situ falling-head permeameter tests were performed for the determination of Kv. The tests were conducted using a 10 × 10 grid, at five different depths. In total, 871 valid Kvvalues from layers 1–5 were obtained. The Kruskal-Wallis test on these Kvvalues before and after the flood season shows they belonged to different populations. The sediments before the flood season primarily consisted of sand and gravel, whereas after the flood season, patchy distribution of silt/clay occurred in the sandy streambed and silt/clay content increased with the increasing depth; under the losing condition during flooding, downward movement of water brought fine particles into the coarse sediments, partially silting the pores. Accordingly, the Kvvalues after the flood season had a smaller mean and median, and a higher level of heterogeneity, compared to those before the flood season. Additionally, the distribution pattern in Kvacross the stream differed before and after flood season; after the flood season, there was an increasing trend in Kvfrom the south bank to the north bank. Overall, the contrasts of Kvbefore and after the flood season were predominantly subject to the infiltration of fine particles.

KW - China

KW - Groundwater statistics

KW - Groundwater/surface-water relations

KW - Temporal variability

KW - Vertical hydraulic conductivity

UR - http://www.scopus.com/inward/record.url?scp=84945469247&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84945469247&partnerID=8YFLogxK

U2 - 10.1007/s10040-015-1275-9

DO - 10.1007/s10040-015-1275-9

M3 - Article

AN - SCOPUS:84945469247

VL - 23

SP - 1603

EP - 1615

JO - Hydrogeology Journal

JF - Hydrogeology Journal

SN - 1431-2174

IS - 7

ER -