Observations of Cross-Shore Chenier Dynamics in Demak, Indonesia
Cheniers are important for stabilising mud-dominated coastlines. A chenier is a body of wave-reworked, coarse-grained sediment consisting of sand and shells overlying a muddy substrate. In this paper we present and analyse a week of field observations of the dynamics of a single chenier along the co...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-11-01
|
| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/8/12/972 |
| _version_ | 1797546203775238144 |
|---|---|
| author | Silke A. J. Tas Dirk S. van Maren Ad J. H. M. Reniers |
| author_facet | Silke A. J. Tas Dirk S. van Maren Ad J. H. M. Reniers |
| author_sort | Silke A. J. Tas |
| collection | DOAJ |
| description | Cheniers are important for stabilising mud-dominated coastlines. A chenier is a body of wave-reworked, coarse-grained sediment consisting of sand and shells overlying a muddy substrate. In this paper we present and analyse a week of field observations of the dynamics of a single chenier along the coast of Demak, Indonesia. Despite relatively calm hydrodynamics during the one-week observational period, the chenier migrated surprisingly fast in the landward direction. The role of the tide and waves on the cross-shore chenier dynamics is explored using velocity moments as a proxy for the sediment transport. This approach shows that both tide and waves are capable of transporting the sediment of the chenier system. During calm conditions (representative for the south-east monsoon season), the tides generate a landward-directed sediment transport when the chenier crest is high relative to mean sea level. Waves only generate substantial sediment transport (direct, via skewness, and indirect, via stirring) when the chenier is submerged during periods with higher waves. The cross-shore chenier dynamics are very sensitive to the timing of tide and waves: most transport takes place when high water levels coincide with (relatively) high waves. |
| first_indexed | 2024-03-10T14:26:46Z |
| format | Article |
| id | doaj.art-f9da20582e9c48e2a92597d75be93875 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T14:26:46Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-f9da20582e9c48e2a92597d75be938752023-11-20T22:57:52ZengMDPI AGJournal of Marine Science and Engineering2077-13122020-11-0181297210.3390/jmse8120972Observations of Cross-Shore Chenier Dynamics in Demak, IndonesiaSilke A. J. Tas0Dirk S. van Maren1Ad J. H. M. Reniers2Faculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, The NetherlandsFaculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, The NetherlandsFaculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, The NetherlandsCheniers are important for stabilising mud-dominated coastlines. A chenier is a body of wave-reworked, coarse-grained sediment consisting of sand and shells overlying a muddy substrate. In this paper we present and analyse a week of field observations of the dynamics of a single chenier along the coast of Demak, Indonesia. Despite relatively calm hydrodynamics during the one-week observational period, the chenier migrated surprisingly fast in the landward direction. The role of the tide and waves on the cross-shore chenier dynamics is explored using velocity moments as a proxy for the sediment transport. This approach shows that both tide and waves are capable of transporting the sediment of the chenier system. During calm conditions (representative for the south-east monsoon season), the tides generate a landward-directed sediment transport when the chenier crest is high relative to mean sea level. Waves only generate substantial sediment transport (direct, via skewness, and indirect, via stirring) when the chenier is submerged during periods with higher waves. The cross-shore chenier dynamics are very sensitive to the timing of tide and waves: most transport takes place when high water levels coincide with (relatively) high waves.https://www.mdpi.com/2077-1312/8/12/972cheniersfield measurementssediment transportmangrovesmuddy coastIndonesia |
| spellingShingle | Silke A. J. Tas Dirk S. van Maren Ad J. H. M. Reniers Observations of Cross-Shore Chenier Dynamics in Demak, Indonesia Journal of Marine Science and Engineering cheniers field measurements sediment transport mangroves muddy coast Indonesia |
| title | Observations of Cross-Shore Chenier Dynamics in Demak, Indonesia |
| title_full | Observations of Cross-Shore Chenier Dynamics in Demak, Indonesia |
| title_fullStr | Observations of Cross-Shore Chenier Dynamics in Demak, Indonesia |
| title_full_unstemmed | Observations of Cross-Shore Chenier Dynamics in Demak, Indonesia |
| title_short | Observations of Cross-Shore Chenier Dynamics in Demak, Indonesia |
| title_sort | observations of cross shore chenier dynamics in demak indonesia |
| topic | cheniers field measurements sediment transport mangroves muddy coast Indonesia |
| url | https://www.mdpi.com/2077-1312/8/12/972 |
| work_keys_str_mv | AT silkeajtas observationsofcrossshorechenierdynamicsindemakindonesia AT dirksvanmaren observationsofcrossshorechenierdynamicsindemakindonesia AT adjhmreniers observationsofcrossshorechenierdynamicsindemakindonesia |