Preprints
https://doi.org/10.5194/hess-2024-84
https://doi.org/10.5194/hess-2024-84
29 Apr 2024
 | 29 Apr 2024
Status: this discussion paper is a preprint. It has been under review for the journal Hydrology and Earth System Sciences (HESS). The manuscript was not accepted for further review after discussion.

Exploring the interplay of new and young water fractions with hillslope topography in a subtropical headwater catchment

Tsung-Ren Peng and Jun-Yi Lee

Abstract. Our study explores the intricate relationships between new water (Fnew), young water (Fyw), and topographic influences within small catchments, utilizing the Height Above the Nearest Drainage (HAND) as a key metric. Analysis revealed that seepage water consistently contains higher fractions of young water than stream water, despite similar contributions of new water from precipitation, highlighting differential hydrological responses. The relationship between Fnew and Fyw exhibited varying slopes for seepage and stream water, suggesting distinct hydrological sources and behaviors, with seepage water reflecting a “flashy” system and stream water indicating a “damped” system. A nonlinear dynamic was observed between HAND and transit time measures, with a notable threshold at approximately 10 m of HAND, beyond which the contribution of young and new water to streamflow declines, indicating a shift in hydrological pathways. This threshold behavior emphasizes the complex influence of topography on water movement and age within catchments. This research bridges gaps in our understanding of catchment hydrology, offering insights into the spatial and temporal dynamics of water movement and the pivotal role of landscape features in shaping hydrological responses.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Tsung-Ren Peng and Jun-Yi Lee

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on hess-2024-84', Anonymous Referee #1, 20 May 2024
    • AC1: 'Reply on RC1', Jun-Yi Lee, 24 Jun 2024
  • RC2: 'Review comment on hess-2024-84', Anonymous Referee #2, 27 May 2024
    • AC2: 'Reply on RC2', Jun-Yi Lee, 24 Jun 2024

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on hess-2024-84', Anonymous Referee #1, 20 May 2024
    • AC1: 'Reply on RC1', Jun-Yi Lee, 24 Jun 2024
  • RC2: 'Review comment on hess-2024-84', Anonymous Referee #2, 27 May 2024
    • AC2: 'Reply on RC2', Jun-Yi Lee, 24 Jun 2024
Tsung-Ren Peng and Jun-Yi Lee
Tsung-Ren Peng and Jun-Yi Lee

Viewed

Total article views: 292 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
212 51 29 292 9 17
  • HTML: 212
  • PDF: 51
  • XML: 29
  • Total: 292
  • BibTeX: 9
  • EndNote: 17
Views and downloads (calculated since 29 Apr 2024)
Cumulative views and downloads (calculated since 29 Apr 2024)

Viewed (geographical distribution)

Total article views: 312 (including HTML, PDF, and XML) Thereof 312 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 10 Oct 2024
Download
Short summary
Our study examines how new and young water relate to land shape in small catchments using the Height Above Nearest Drainage (HAND) metric. We discovered seepage water has more young water than river water, indicating a "flashy" response to rain, unlike the "damped" river water. We also found a shift in water movement at about 10 m above drainage, highlighting topography's complex impact on water dynamics. This research clarifies the influence of land shape on water movement in catchments.