Wednesday, April 24, 2024 11:15am to 12:05pm
About this Event
1111 Engineering Drive, Boulder, CO 80309
https://www.colorado.edu/ceae/newsevents/boase-seminars/boase-hydrologic-sciences-and-water-resources-engineering-seminar-seriesSpeaker: Antonio Alves Meira Neto, assistant professor, civil and environmental engineering, Colorado State University
Title: Controls on Hydrologic Variability Across Timescales
Abstract
The field of comparative hydrology has grown tremendously in the last two decades, spurred mainly by the availability of large, catchment-scale hydrologic datasets, accompanied by a variety of auxiliary climatic and landscape-related properties. The availability of such datasets has made it possible for several research agendas to be developed, as for example in studies related to catchment classification, investigations of the controls on the long-term water balance, testing of alternative models of the water balance at different timescales, understanding of specific streamflow signatures such as the flow duration curve, and the elucidation of the mechanisms generating streamflow and floods. Little emphasis has been placed, however, at promoting an understanding of how such hydrologic processes are manifested across timescales, or as to how the controls on the water balance change when moving from shorter timescales to longer timescales, or the opposite, i.e., how such controls move from longer to shorter timescales. This study reviews what the progresses achieved through comparative hydrology studies over the last three decades. My primary approach is to highlight what has been learned about hydrological phenomena, rather than what has been learned about how to improve hydrological modelling. "Phenomena" here refers to the observation of patterns through empirical data, for which no obvious explanation exists, requiring thus hypothesis to be made for it to be properly understood. I will explore this compilation of findings with the perspective of investigating whether sufficient evidence pointing at a theory of temporal scaling in hydrology exist, and how to suggest possible venues for its exploration.
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