Fine spatial resolution simulation of two-dimensional modeling of flow pulses discharge into wetlands

Case study of loxahatchee impoundment landscape assessment, the everglades

Mehrnoosh Mahmoudi, Reinaldo Garcia, Eric Cline, Rene M. Price, Leonard J. Scinto, Shimon Wdowinski, Fernando Miralles-Wilhelm

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Wetland ecosystems are controlled by their hydrology. Recent experimental and numerical investigations have suggested that flow pulses are needed to preserve sediment redistribution in some wetlands. In this study, the authors investigate the effect of pulsed-flow conditions on the hydrologic regime of low-gradient densely vegetated wetlands using a fine-resolution, two-dimensional depth-averaged numerical flow model. The model was applied to simulate flow depth and velocity within the Loxahatchee Impoundment Landscape Assessment (LILA) wetland located in Boynton Beach, Florida. Two pulsed-flow conditions with low-pulse and high-pulse flow magnitude were considered. The simulation results of low-pulse flow conditions reveal the areas within deep sloughs where flow velocities and directions change continuously, creating enhanced mixing areas within the deep slough. These mixing areas may have the potential to affect processes such as sediment redistribution and nutrient transport. Simulation of high-pulse flow magnitude, however, results in more uniform flow velocity inside deep slough. It also indicates that a pulse can only be detected when inflow discharge is at least 3.0 m3/s. Lower inflow discharge values are too weak in magnitude to generate substantial changes in water surface elevation and velocity and they may not exhibit a flow wave propagation into the study area.

Original languageEnglish (US)
Article numberD5015001
JournalJournal of Hydrologic Engineering
Volume22
Issue number1
DOIs
StatePublished - Jan 1 2017

Fingerprint

two-dimensional modeling
Wetlands
impoundment
spatial resolution
wetland
Pulsatile flow
Flow velocity
simulation
Sediments
Hydrology
Beaches
Ecosystems
Wave propagation
Nutrients
flow velocity
inflow
Water
sediment
wave propagation
hydrology

Keywords

  • Ecosystem
  • Everglades
  • Hydrology
  • Mixing area
  • Numerical model
  • Pulsed-flow conditions
  • Ridge and slough landscape
  • Wetlands

ASJC Scopus subject areas

  • Environmental Chemistry
  • Civil and Structural Engineering
  • Water Science and Technology
  • Environmental Science(all)

Cite this

Fine spatial resolution simulation of two-dimensional modeling of flow pulses discharge into wetlands : Case study of loxahatchee impoundment landscape assessment, the everglades. / Mahmoudi, Mehrnoosh; Garcia, Reinaldo; Cline, Eric; Price, Rene M.; Scinto, Leonard J.; Wdowinski, Shimon; Miralles-Wilhelm, Fernando.

In: Journal of Hydrologic Engineering, Vol. 22, No. 1, D5015001, 01.01.2017.

Research output: Contribution to journalArticle

Mahmoudi, Mehrnoosh ; Garcia, Reinaldo ; Cline, Eric ; Price, Rene M. ; Scinto, Leonard J. ; Wdowinski, Shimon ; Miralles-Wilhelm, Fernando. / Fine spatial resolution simulation of two-dimensional modeling of flow pulses discharge into wetlands : Case study of loxahatchee impoundment landscape assessment, the everglades. In: Journal of Hydrologic Engineering. 2017 ; Vol. 22, No. 1.
@article{64cb6b46875f4fb9bfca1010fef30ee5,
title = "Fine spatial resolution simulation of two-dimensional modeling of flow pulses discharge into wetlands: Case study of loxahatchee impoundment landscape assessment, the everglades",
abstract = "Wetland ecosystems are controlled by their hydrology. Recent experimental and numerical investigations have suggested that flow pulses are needed to preserve sediment redistribution in some wetlands. In this study, the authors investigate the effect of pulsed-flow conditions on the hydrologic regime of low-gradient densely vegetated wetlands using a fine-resolution, two-dimensional depth-averaged numerical flow model. The model was applied to simulate flow depth and velocity within the Loxahatchee Impoundment Landscape Assessment (LILA) wetland located in Boynton Beach, Florida. Two pulsed-flow conditions with low-pulse and high-pulse flow magnitude were considered. The simulation results of low-pulse flow conditions reveal the areas within deep sloughs where flow velocities and directions change continuously, creating enhanced mixing areas within the deep slough. These mixing areas may have the potential to affect processes such as sediment redistribution and nutrient transport. Simulation of high-pulse flow magnitude, however, results in more uniform flow velocity inside deep slough. It also indicates that a pulse can only be detected when inflow discharge is at least 3.0 m3/s. Lower inflow discharge values are too weak in magnitude to generate substantial changes in water surface elevation and velocity and they may not exhibit a flow wave propagation into the study area.",
keywords = "Ecosystem, Everglades, Hydrology, Mixing area, Numerical model, Pulsed-flow conditions, Ridge and slough landscape, Wetlands",
author = "Mehrnoosh Mahmoudi and Reinaldo Garcia and Eric Cline and Price, {Rene M.} and Scinto, {Leonard J.} and Shimon Wdowinski and Fernando Miralles-Wilhelm",
year = "2017",
month = "1",
day = "1",
doi = "10.1061/(ASCE)HE.1943-5584.0001206",
language = "English (US)",
volume = "22",
journal = "Journal of Hydrologic Engineering - ASCE",
issn = "1084-0699",
publisher = "American Society of Civil Engineers (ASCE)",
number = "1",

}

TY - JOUR

T1 - Fine spatial resolution simulation of two-dimensional modeling of flow pulses discharge into wetlands

T2 - Case study of loxahatchee impoundment landscape assessment, the everglades

AU - Mahmoudi, Mehrnoosh

AU - Garcia, Reinaldo

AU - Cline, Eric

AU - Price, Rene M.

AU - Scinto, Leonard J.

AU - Wdowinski, Shimon

AU - Miralles-Wilhelm, Fernando

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Wetland ecosystems are controlled by their hydrology. Recent experimental and numerical investigations have suggested that flow pulses are needed to preserve sediment redistribution in some wetlands. In this study, the authors investigate the effect of pulsed-flow conditions on the hydrologic regime of low-gradient densely vegetated wetlands using a fine-resolution, two-dimensional depth-averaged numerical flow model. The model was applied to simulate flow depth and velocity within the Loxahatchee Impoundment Landscape Assessment (LILA) wetland located in Boynton Beach, Florida. Two pulsed-flow conditions with low-pulse and high-pulse flow magnitude were considered. The simulation results of low-pulse flow conditions reveal the areas within deep sloughs where flow velocities and directions change continuously, creating enhanced mixing areas within the deep slough. These mixing areas may have the potential to affect processes such as sediment redistribution and nutrient transport. Simulation of high-pulse flow magnitude, however, results in more uniform flow velocity inside deep slough. It also indicates that a pulse can only be detected when inflow discharge is at least 3.0 m3/s. Lower inflow discharge values are too weak in magnitude to generate substantial changes in water surface elevation and velocity and they may not exhibit a flow wave propagation into the study area.

AB - Wetland ecosystems are controlled by their hydrology. Recent experimental and numerical investigations have suggested that flow pulses are needed to preserve sediment redistribution in some wetlands. In this study, the authors investigate the effect of pulsed-flow conditions on the hydrologic regime of low-gradient densely vegetated wetlands using a fine-resolution, two-dimensional depth-averaged numerical flow model. The model was applied to simulate flow depth and velocity within the Loxahatchee Impoundment Landscape Assessment (LILA) wetland located in Boynton Beach, Florida. Two pulsed-flow conditions with low-pulse and high-pulse flow magnitude were considered. The simulation results of low-pulse flow conditions reveal the areas within deep sloughs where flow velocities and directions change continuously, creating enhanced mixing areas within the deep slough. These mixing areas may have the potential to affect processes such as sediment redistribution and nutrient transport. Simulation of high-pulse flow magnitude, however, results in more uniform flow velocity inside deep slough. It also indicates that a pulse can only be detected when inflow discharge is at least 3.0 m3/s. Lower inflow discharge values are too weak in magnitude to generate substantial changes in water surface elevation and velocity and they may not exhibit a flow wave propagation into the study area.

KW - Ecosystem

KW - Everglades

KW - Hydrology

KW - Mixing area

KW - Numerical model

KW - Pulsed-flow conditions

KW - Ridge and slough landscape

KW - Wetlands

UR - http://www.scopus.com/inward/record.url?scp=85009399927&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85009399927&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)HE.1943-5584.0001206

DO - 10.1061/(ASCE)HE.1943-5584.0001206

M3 - Article

VL - 22

JO - Journal of Hydrologic Engineering - ASCE

JF - Journal of Hydrologic Engineering - ASCE

SN - 1084-0699

IS - 1

M1 - D5015001

ER -