X9 (2019-2022): Bedload Monitoring of Ephemeral Streams (seed)

• New Mexico Tech, United States of America

We will deploy broadband and node seismometers along reaches of ephemeral
streams in New Mexico and Israel in conjunction with modern in-stream
measurements of sediment transport. Bedload flux is fundamental to river
dynamics and landscape evolution, yet representative measurement of this key
parameter is inhibited by its spatial and temporal variability as well as the
challenge of sampling in high-energy environments without altering transport.
Surrogate methods are a promising approach, yet calibration remains a
challenge, and the lower grain size limit of detection is uncertain. This
project will build up from direct bedload measurements, to acoustic
surrogates, to seismic monitoring, providing vital field data that will
enable the advance of fluvial seismology.

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