Data from: Long-distance/time surf-zone tracer evolution affected by inner-shelf tracer retention and recirculation
Figure 4 from Grimes et al. 2021
Description | Figure 4 caption: a)-d) Surface dye concentration D versus quasi-shorenormal coordinates (x ̃, y ̃) for a) T =5.1 h, b) T =6.9 h, c) T =9.95 h, and d) T =11.7 h, corresponding to the green vertical- dotted lines in Figure 3. The MASS estimated northern inner-shelf plume front position y ̃f (red ×’s). Note the D color scales decrease with T , with blue-to-magenta color transition at a)-c) D=1 ppb and d) D=0.5 ppb. In a)-c) the depth-averaged alongshore current (cyan) is indicated at WH (blue) with 5 cm s−1 increments indicated by a red dot. In c)-d) inner-shelf alongshore north-bound (c) and south-bound (d) transects are shown in gray with the current vessel position (black circle) and ±10 min highlighted in light green. Regions without data are gray, the region between the break-point and shoreline (x ̃sz ≤ x ̃ ≤ x ̃sl) is semi-transparent, and the region onshore of the shoreline (x ̃>x ̃sl) is brown. Bathymetry contours drawn at 2 m intervals for h ≥ 4 m. |
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Primary Manuscript Data
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Description | All data presented/analysed in publication. |
Scope And Content |
See Readme for detailed description. |
Technical Details | MATLAB binary file |
NOAA DEM Bathymetry/Topography
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Description | Raw and 100 m x 100 m smoothed data. |
Technical Details | MATLAB binary file |
Background Cross-shore Radiance
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Description | Cross-shore profiles of dye concentration, normalized difference water index, and unit-normalized total radiance taken from dye-free regions. |
Technical Details | MATLAB binary file |
Processing Scripts
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Description | Subset of scripts used in manuscript analyses. |
Scope And Content | On 2021-09-30, the files run_SZ_IS_box_model.m and solve_SZ_IS_dye_adv_diff_ISlosses_DG.m were replaced by the files run_SZ_IS_box_model_v2.m and solve_SZ_IS_dye_adv_diff_v2.m, respectively. |
Technical Details | MATLAB (.m) files |
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- Cite This Work
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Grimes, Derek J.; Feddersen, Falk; Giddings, Sarah N. (2021). Data from: Long-distance/time surf-zone tracer evolution affected by inner-shelf tracer retention and recirculation. In The Cross-Surfzone/Inner-shelf Dye Exchange (CSIDE) Study. UC San Diego Library Digital Collections. https://doi.org/10.6075/J02F7NBJ
- Description
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Surf-zone and inner-shelf transport and mixing impact nearshore systems, such as larval recruitment in intertidal ecosystems and water quality impacts from coastal pollution, and can be studied using shoreline released tracers. Surf-zone alongshore directed currents driven by oblique breaking waves transport tracers over long distances. Tracer is also mixed across the surf-zone by eddying currents and exported onto the inner-shelf by rip currents, which decrease absolute shoreline tracer concentration. Horizontal mixing also increases tracer plume length-scales, known as dispersion, and cross-shore variation in the alongshore current can induce enhanced alongshore dispersion. Over long- distances/times, tracer evolution depends on both surf-zone and inner-shelf currents and alongshore dispersion. Here, the evolution of a surf-zone released tracer is observed for ≈ 30 h and over several kilometers downstream (alongshore) of the release. Downstream of the release, the surf-zone maximum concentration decayed and concentration time-series developed long-duration tails (skewness). A surf-zone/inner-shelf box tracer model reproduces the surf-zone tracer observations, providing insight to the relative roles of cross-shore exchange, recirculation and alongshore dispersion. Importantly, recirculation between the surf-zone and the inner-shelf is a critical process that changes the tracer distribution close to shore.
- Date Collected
- 2015-09 to 2015-10
- Date Issued
- 2021
- Principal Investigator
- Co Principal Investigator
- Researcher
- Funding
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This work was funded under the CSIDE grant by the National Science Foundation (NSF OCE-1459389). This work was also supported by the Office of Naval Research through grant N00014-5-1-2631. This project is funded, in part, by the US Coastal Research Program (USCRP) as administered by the US Army Corps of Engineers (USACE), Department of Defense. The content of the information provided in this publication does not necessarily reflect the position or the policy of the government, and no official endorsement should be inferred. The authors’ acknowledge the USACE and USCRP’s support of their effort to strengthen coastal academic programs and address coastal community needs in the United States.
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- Cartographics
Point: 32.5896, -117.133
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- English
- Identifier
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Identifier: Derek J. Grimes: https://orcid.org/0000-0001-5286-7819
Identifier: Falk Feddersen: https://orcid.org/0000-0002-5488-9074
Identifier: Sarah N. Giddings: https://orcid.org/0000-0003-0726-4781
- Related Resource
- Grimes, D. J., Feddersen, F., & Giddings, S. N. (2021). Long-distance/time surf-zone tracer evolution affected by inner-shelf tracer retention and recirculation. Journal of Geophysical Research: Oceans, 126, e2021JC017661. https://doi.org/10.1029/2021JC017661
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- Last Modified
2023-06-30