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Abstract
Radio Frequency Identification tagged cobble survey data from the Rio Mameyes .
Tagged tracers with positions overtime. Additional documentation is presented within the dataset file.
Sediment transport is an intrinsically stochastic process, and measurement of bed load in the environment is further complicated by the unsteady nature of river flooding. Here we present a methodology for analyzing sediment tracer data with unsteady forcing. We define a dimensionless impulse by integrating the cumulative excess shear velocity for the duration of measurement, normalized by grain size. We analyze the dispersion of a plume of cobble tracers in a very flashy stream over two years. The mean and variance of transport distance collapse onto well-defined linear and power-law relations, respectively, when plotted against cumulative dimensionless impulse. Data suggest that the asymptotic limit of bed load tracer dispersion is super diffusive, in line with a broad class of geophysical flows exhibiting strong directional asymmetry (advection), thin-tailed step lengths and heavy-tailed waiting times. The impulse framework justifies the use of quasi-steady flow approximations for long-term river evolution modeling.
Subject Keywords
Coverage
Spatial
Temporal
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Content
ReadMe.md
LCZO -- Sediment Transport -- Mameyes Watershed -- (2010-2012)
OVERVIEW
Description/Abstract
Radio Frequency Identification tagged cobble survey data.
Creator/Author
Phillips, C.B.
CZOs
Luquillo
Contact
Miguel Leon, Miguel.Leon@unh.edu
Subtitle
Mameyes RFID Tracer data
SUBJECTS
Disciplines
Geomorphology
Topics
Sediment Transport
Keywords
Sediment tracers|sediment transport|RFID PIT|bed load transport
Variables
Tagged tracers with positions overtime. Additional documentation is presented within the dataset file.
Variables ODM2
tagged tracer position overtime
TEMPORAL
Date Start
2010-05-28
Date End
2012-06-20
SPATIAL
Field Areas
Rio Mameyes
Location
Mameyes Watershed
North latitude
18.374167
South latitude
18.374167
West longitude
-65.763889
East longitude
-65.763889
REFERENCE
Citation
Phillips, C.B. Mameyes RFID Tracer data. 2013.
CZO ID
2633
Additional Metadata
| Name | Value |
|---|---|
| czos | Luquillo |
| czo_id | 2633 |
| keywords | Sediment tracers, sediment transport, RFID PIT, bed load transport |
| subtitle | Mameyes RFID Tracer data |
| variables | Tagged tracers with positions overtime. Additional documentation is presented within the dataset file. |
| disciplines | Geomorphology |
Related Resources
| This resource is referenced by | Phillips, C. B., R. L., Martin, and D. J., Jerolmack (2013) Impulse framework for unsteady flows reveals super-diffusive bed load transport, Geophysical Research Letters. DOI:10.1002/grl.50323 |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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