Quantification of contemporary storm-induced boulder transport on an intertidal shore platform using Radio Frequency Identification (RFID) technology
Research output: Contribution to journal › Article › peer-review
On completion, we identified boulder displacement in 69% of the tagged array. The accrued boulder transport distance amounted to 233.0 m from 195 incidents of displacement including the movement of a boulder weighing an estimated 11.9 tonnes. Transport was not confined to autumn and winter storms alone as displacement was also recorded during summer months (April ‐ September) despite the seasonally reduced wave magnitude.
Boulder production by wave quarrying was documented in three tagged clasts confirming observations that the shore platform is actively eroding. Incidents of overturning during transport were also recorded including multiple overturning of clasts weighing up to 5 tonnes. We further identify a statistically significant difference (maximum p‐value: ≤0.03) between the transport distances attributed to constrained and unconstrained boulders suggesting the pre‐transport morphological setting exerts considerable control over boulder transport potential.
The findings establish low to moderate storm waves as a key component in the evolution of the study site. More broadly, we claim that high frequency, low magnitude storms regularly modify these overlooked rocky coastal locations suggesting the hydrodynamic capability at such sites may have been previously underestimated.
|Journal||Earth Surface Processes and Landforms|
|Early online date||5 Feb 2020|
|Publication status||Early online - 5 Feb 2020|
Rights statement: This is the peer reviewed version of the following article: Hastewell, L., Inkpen, R., Bray, M., and Schaefer, M. ( 2020) Quantification of contemporary storm‐induced boulder transport on an intertidal shore platform using Radio Frequency Identification (RFID) technology. Earth Surf. Process. Landforms, which has been published in final form at https://doi.org/10.1002/esp.4834. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Accepted author manuscript (Post-print), 6.94 MB, PDF document