Dual control of bedding structure on catchment hydrology: the interplay between direct bedding-parallel recharge and indirect landslide-driven drainage in steep accretionary complexes

Yosuke Yamakawa; Koji Koshimizu; Taro Uchida

doi:10.1016/j.catena.2026.110236

May 28, 2026CATENAOpen Access

Dual control of bedding structure on catchment hydrology: the interplay between direct bedding-parallel recharge and indirect landslide-driven drainage in steep accretionary complexes

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Key Points

The aim is to explore how bedding structure influences hydrology and drainage in steep accretionary complexes.
Integrated structural geology with hydrological models to analyze catchment behavior.
Investigated effects of bedding dip and landslide activity on runoff patterns.
Characterized hydrological variability at the meso-scale across sedimentary ranges.
Bedding-parallel recharge remains uniform when dip exceeds the topography.
Landslide-driven drainage reduces runoff buffering, leading to increased drainage efficiency.
Wetness conditions enhance drainage activation through landslide-derived fracture networks.

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Implication

Analyzes hydrological impacts of bedding structure and landslides in steep complexes, highlighting significant effects.

Abstract

• A novel framework integrates structural geology and hydrological variability. • Bedding-parallel recharge appears spatially uniform when dip exceeds topography. • Indirect landslide-driven drainage potentially reduces dip-slope runoff buffering. • High wetness likely activates drainage via landslide-derived fracture networks. • Results characterize anisotropic hydrology of sedimentary ranges at the meso-scale.

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Yamakawa et al. (2026) studied this question.

synapsesocial.com/papers/6a1bcf835783ba022b6fb938 https://doi.org/10.1016/j.catena.2026.110236

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Dual control of bedding structure on catchment hydrology: the interplay between direct bedding-parallel recharge and indirect landslide-driven drainage in steep accretionary complexes

Key Points

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Implication

Abstract

Discussion

Cite This Study

Dual control of bedding structure on catchment hydrology: the interplay between direct bedding-parallel recharge and indirect landslide-driven drainage in steep accretionary complexes

Key Points

Ask about this paper

Implication

Abstract

Discussion

Cite This Study

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