Earth Surface Dynamics
Earth Surface Dynamics
ESurf
Articles | Volume 14, issue 3
Articles | Volume 14, issue 3
https://doi.org/10.5194/esurf-14-417-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-14-417-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 14, issue 3
Research article
 | 
02 Jun 2026
Research article |  | 02 Jun 2026

Parameter estimation of river incision models of soft sedimentary rocks – a case study on the Kamikita Coastal Plain, northeast Japan

Shizuka Takai, Tomoji Sanga, Taro Shimada, and Seiji Takeda

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Short summary
We estimated bedrock river incision parameters for soft sedimentary rock which were lacking in previous global compilations. In the Kamikita Coastal Plain, Japan, the slope exponent was greater than one (i.e., non-linearity of the incision process), which can be explained by past sea-level changes. The estimated erosion coefficient was almost agreed with the global relationship between unconfined compressive strength, supporting the significant influences of bedrock lithology on the coefficient.
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