Active-distributed temperature sensing dataset beneath a braided river

Alice J. Sai Louie, Leanne K. Morgan, Eddie W. Banks, David Dempsey, Scott Wilson

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
8 Downloads (Pure)

Abstract

Braided rivers play a significant role in replenishing groundwater, but our understanding of how these recharge rates fluctuate over time remains limited. Traditional techniques for gauging groundwater recharge are ineffective for studying complex braided river systems due to their insufficient spatiotemporal resolution. To address this gap, active-distributed temperature sensing (A-DTS) was used. This method combines fiber optic temperature measurements with an active heat source, enabling quantification of groundwater fluxes. In this study, twelve consecutive A-DTS surveys were conducted on a 100 m long hybrid fiber optic cable to a depth of 5 m beneath the Waikirikiri Selwyn River. This experiment was conducted during a period of relatively stable river stage and flow, highlighting the effectiveness of using A-DTS to measure temporal changes in groundwater recharge.

Original languageEnglish
Article number109756
Number of pages6
JournalData in Brief
Volume51
Early online date4 Nov 2023
DOIs
Publication statusPublished - Dec 2023

Keywords

  • Alluvial aquifer
  • Fiber optics
  • Groundwater recharge
  • Heat as a tracer
  • River

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