Mitigation of Channel Shoaling at a Sheltered Inlet Subject to Flood Gate Operations
A comprehensive case study of Keansburg Inlet (New Jersey, USA) is presented with the objective of evaluating inlet management alternatives and assessing the influence of an operational flood gate on channel shoaling. The goal of the research is determining the most effective strategy for minimizing...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-10-01
|
| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/8/11/865 |
| _version_ | 1827703056727277568 |
|---|---|
| author | Laura Lemke Matthew S. Janssen Jon K. Miller |
| author_facet | Laura Lemke Matthew S. Janssen Jon K. Miller |
| author_sort | Laura Lemke |
| collection | DOAJ |
| description | A comprehensive case study of Keansburg Inlet (New Jersey, USA) is presented with the objective of evaluating inlet management alternatives and assessing the influence of an operational flood gate on channel shoaling. The goal of the research is determining the most effective strategy for minimizing the frequency of maintenance dredging. This study compares the effectiveness of (1) traditional structural solutions; (2) modified dredging templates; and (3) assesses the influence of the flood gate operations during conditions representative of a typical year. Alternative analysis is completed using a coupled hydrodynamic–wave model (Delft3D-Flexible Mesh (FM)) with Real Time Control to simulate morphological changes. The model was calibrated and evaluated using collected field data. Water levels are reproduced within 6% of the spring tide range with lag times less than 20 min. The model results and observations suggest sediment transport is dominated by wave action with pronounced variations in dominant wave direction. The results indicate that changes to the operational dredging, or what the authors have termed broadly as “adaptive dredging techniques”, appear to deliver the most promising improvement. Model results suggest that the current operational procedures of the flood gate do not significantly alter the channel infilling rates and patterns during typical (i.e., non-extreme event) conditions. |
| first_indexed | 2024-03-10T15:11:04Z |
| format | Article |
| id | doaj.art-8605f3ec791040ad8f7a521e4dd44919 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T15:11:04Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-8605f3ec791040ad8f7a521e4dd449192023-11-20T19:21:58ZengMDPI AGJournal of Marine Science and Engineering2077-13122020-10-0181186510.3390/jmse8110865Mitigation of Channel Shoaling at a Sheltered Inlet Subject to Flood Gate OperationsLaura Lemke0Matthew S. Janssen1Jon K. Miller2Coastal Engineering Research Group, Davidson Laboratory, Stevens Institute of Technology, Hoboken, NJ 07030, USACoastal Engineering Research Group, Davidson Laboratory, Stevens Institute of Technology, Hoboken, NJ 07030, USACoastal Engineering Research Group, Davidson Laboratory, Stevens Institute of Technology, Hoboken, NJ 07030, USAA comprehensive case study of Keansburg Inlet (New Jersey, USA) is presented with the objective of evaluating inlet management alternatives and assessing the influence of an operational flood gate on channel shoaling. The goal of the research is determining the most effective strategy for minimizing the frequency of maintenance dredging. This study compares the effectiveness of (1) traditional structural solutions; (2) modified dredging templates; and (3) assesses the influence of the flood gate operations during conditions representative of a typical year. Alternative analysis is completed using a coupled hydrodynamic–wave model (Delft3D-Flexible Mesh (FM)) with Real Time Control to simulate morphological changes. The model was calibrated and evaluated using collected field data. Water levels are reproduced within 6% of the spring tide range with lag times less than 20 min. The model results and observations suggest sediment transport is dominated by wave action with pronounced variations in dominant wave direction. The results indicate that changes to the operational dredging, or what the authors have termed broadly as “adaptive dredging techniques”, appear to deliver the most promising improvement. Model results suggest that the current operational procedures of the flood gate do not significantly alter the channel infilling rates and patterns during typical (i.e., non-extreme event) conditions.https://www.mdpi.com/2077-1312/8/11/865Delft3D modelmaintenance dredgingRaritan Baytide/storm gatesmall-craft harborshoaling |
| spellingShingle | Laura Lemke Matthew S. Janssen Jon K. Miller Mitigation of Channel Shoaling at a Sheltered Inlet Subject to Flood Gate Operations Journal of Marine Science and Engineering Delft3D model maintenance dredging Raritan Bay tide/storm gate small-craft harbor shoaling |
| title | Mitigation of Channel Shoaling at a Sheltered Inlet Subject to Flood Gate Operations |
| title_full | Mitigation of Channel Shoaling at a Sheltered Inlet Subject to Flood Gate Operations |
| title_fullStr | Mitigation of Channel Shoaling at a Sheltered Inlet Subject to Flood Gate Operations |
| title_full_unstemmed | Mitigation of Channel Shoaling at a Sheltered Inlet Subject to Flood Gate Operations |
| title_short | Mitigation of Channel Shoaling at a Sheltered Inlet Subject to Flood Gate Operations |
| title_sort | mitigation of channel shoaling at a sheltered inlet subject to flood gate operations |
| topic | Delft3D model maintenance dredging Raritan Bay tide/storm gate small-craft harbor shoaling |
| url | https://www.mdpi.com/2077-1312/8/11/865 |
| work_keys_str_mv | AT lauralemke mitigationofchannelshoalingatashelteredinletsubjecttofloodgateoperations AT matthewsjanssen mitigationofchannelshoalingatashelteredinletsubjecttofloodgateoperations AT jonkmiller mitigationofchannelshoalingatashelteredinletsubjecttofloodgateoperations |