Persistent Link:
http://hdl.handle.net/10150/617400
Title:
Coevolution of volcanic catchments in Japan
Author:
Yoshida, Takeo; Troch, Peter A.
Affiliation:
Univ Arizona
Issue Date:
2016-03-16
Publisher:
COPERNICUS GESELLSCHAFT MBH
Citation:
Coevolution of volcanic catchments in Japan 2016, 20 (3):1133 Hydrology and Earth System Sciences
Journal:
Hydrology and Earth System Sciences
Rights:
© Author(s) 2016. CC Attribution 3.0 License.
Collection Information:
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
Abstract:
Present-day landscapes have evolved over time through interactions between the prevailing climates and geological settings. Understanding the linkage between spatial patterns of landforms, soils, and vegetation in landscapes and their hydrological response is critical to make quantitative predictions in ungaged basins. Catchment coevolution is a theoretical framework that seeks to formulate hypotheses about the mechanisms and conditions that determine the historical development of catchments and how such evolution affects their hydrological response. In this study, we selected 14 volcanic catchments of different ages (from 0.225 to 82.2 Ma) in Japan. We derived indices of landscape properties (drainage density and slope–area relationship) as well as hydrological response (annual water balance, baseflow index, and flow–duration curves) and examined their relation with catchment age and climate (through the aridity index). We found a significant correlation between drainage density and baseflow index with age, but not with climate. The intra-annual flow variability was also significantly related to catchments age. Younger catchments tended to have lower peak flows and higher low flows, while older catchments exhibited more flashy runoff. The decrease in baseflow with catchment age is consistent with the existing hypothesis that in volcanic landscapes the major flow pathways change over time from deep groundwater flow to shallow subsurface flow. The drainage density of our catchments decreased with age, contrary to previous findings in a set of similar, but younger volcanic catchments in the Oregon Cascades, in which drainage density increased with age. In that case, older catchments were thought to show more landscape incision due to increasing near-surface lateral flow paths. Our results suggests two competing hypotheses on the evolution of drainage density in mature catchments. One is that as catchments continue to age, the hydrologically active channels retreat because less recharge leads to lower average aquifer levels and less baseflow. The other hypothesis is that the active channels do not undergo much surface dissection after the catchments reach maturity.
ISSN:
1607-7938
DOI:
10.5194/hess-20-1133-2016
Version:
Final published version
Sponsors:
NARO Grant for Research Abroad
Additional Links:
http://www.hydrol-earth-syst-sci.net/20/1133/2016/

Full metadata record

DC FieldValue Language
dc.contributor.authorYoshida, Takeoen
dc.contributor.authorTroch, Peter A.en
dc.date.accessioned2016-07-23T00:04:06Z-
dc.date.available2016-07-23T00:04:06Z-
dc.date.issued2016-03-16-
dc.identifier.citationCoevolution of volcanic catchments in Japan 2016, 20 (3):1133 Hydrology and Earth System Sciencesen
dc.identifier.issn1607-7938-
dc.identifier.doi10.5194/hess-20-1133-2016-
dc.identifier.urihttp://hdl.handle.net/10150/617400-
dc.description.abstractPresent-day landscapes have evolved over time through interactions between the prevailing climates and geological settings. Understanding the linkage between spatial patterns of landforms, soils, and vegetation in landscapes and their hydrological response is critical to make quantitative predictions in ungaged basins. Catchment coevolution is a theoretical framework that seeks to formulate hypotheses about the mechanisms and conditions that determine the historical development of catchments and how such evolution affects their hydrological response. In this study, we selected 14 volcanic catchments of different ages (from 0.225 to 82.2 Ma) in Japan. We derived indices of landscape properties (drainage density and slope–area relationship) as well as hydrological response (annual water balance, baseflow index, and flow–duration curves) and examined their relation with catchment age and climate (through the aridity index). We found a significant correlation between drainage density and baseflow index with age, but not with climate. The intra-annual flow variability was also significantly related to catchments age. Younger catchments tended to have lower peak flows and higher low flows, while older catchments exhibited more flashy runoff. The decrease in baseflow with catchment age is consistent with the existing hypothesis that in volcanic landscapes the major flow pathways change over time from deep groundwater flow to shallow subsurface flow. The drainage density of our catchments decreased with age, contrary to previous findings in a set of similar, but younger volcanic catchments in the Oregon Cascades, in which drainage density increased with age. In that case, older catchments were thought to show more landscape incision due to increasing near-surface lateral flow paths. Our results suggests two competing hypotheses on the evolution of drainage density in mature catchments. One is that as catchments continue to age, the hydrologically active channels retreat because less recharge leads to lower average aquifer levels and less baseflow. The other hypothesis is that the active channels do not undergo much surface dissection after the catchments reach maturity.en
dc.description.sponsorshipNARO Grant for Research Abroaden
dc.language.isoenen
dc.publisherCOPERNICUS GESELLSCHAFT MBHen
dc.relation.urlhttp://www.hydrol-earth-syst-sci.net/20/1133/2016/en
dc.rights© Author(s) 2016. CC Attribution 3.0 License.en
dc.titleCoevolution of volcanic catchments in Japanen
dc.typeArticleen
dc.contributor.departmentUniv Arizonaen
dc.identifier.journalHydrology and Earth System Sciencesen
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
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