The protective benefits of tsunami mitigation parks and ramifications for their strategic design
© 2020 National Academy of Sciences. All rights reserved. Nature-based solutions are becoming an increasingly important component of sustainable coastal risk management. For particularly destructive hazards like tsunamis, natural elements like vegetation are often combined with designed elements lik...
| Main Authors: | , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Proceedings of the National Academy of Sciences
2021
|
| Online Access: | https://hdl.handle.net/1721.1/134099 |
| _version_ | 1811072238100676608 |
|---|---|
| author | Lunghino, Brent Santiago Tate, Adrian F Mazereeuw, Miho Muhari, Abdul Giraldo, Francis X Marras, Simone Suckale, Jenny |
| author2 | Massachusetts Institute of Technology. Department of Architecture |
| author_facet | Massachusetts Institute of Technology. Department of Architecture Lunghino, Brent Santiago Tate, Adrian F Mazereeuw, Miho Muhari, Abdul Giraldo, Francis X Marras, Simone Suckale, Jenny |
| author_sort | Lunghino, Brent |
| collection | MIT |
| description | © 2020 National Academy of Sciences. All rights reserved. Nature-based solutions are becoming an increasingly important component of sustainable coastal risk management. For particularly destructive hazards like tsunamis, natural elements like vegetation are often combined with designed elements like seawalls or dams to augment the protective benefits of each component. One example of this kind of hybrid approach is the so-called tsunami mitigation park, which combines a designed hillscape with vegetation. Despite the increasing popularity of tsunami mitigation parks, the protective benefits they provide are poorly understood and incompletely quantified. As a consequence of this lack of understanding, current designs might not maximize the protective benefits of tsunami mitigation parks. Here, we numerically model the interactions between a single row of hills with an incoming tsunami to identify the mechanisms through which the park protects the coast. We initialize the tsunami as an N wave that propagates to shore and impacts the coast directly. We find that partial reflection of the incoming wave is the most important mechanism by which hills reduce the kinetic energy that propagates onshore. The protective benefit of tsunami mitigation parks is thus comparable to that of a small wall, at least for tsunamis with amplitudes that are comparable to the hill height. We also show that hills could elevate potential damage in the immediate vicinity of the hills where flow speeds increase compared to a planar beach, suggesting the need to include a buffer zone behind the hills into a strategic park design. |
| first_indexed | 2024-09-23T09:02:49Z |
| format | Article |
| id | mit-1721.1/134099 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:02:49Z |
| publishDate | 2021 |
| publisher | Proceedings of the National Academy of Sciences |
| record_format | dspace |
| spelling | mit-1721.1/1340992023-03-01T20:31:46Z The protective benefits of tsunami mitigation parks and ramifications for their strategic design Lunghino, Brent Santiago Tate, Adrian F Mazereeuw, Miho Muhari, Abdul Giraldo, Francis X Marras, Simone Suckale, Jenny Massachusetts Institute of Technology. Department of Architecture © 2020 National Academy of Sciences. All rights reserved. Nature-based solutions are becoming an increasingly important component of sustainable coastal risk management. For particularly destructive hazards like tsunamis, natural elements like vegetation are often combined with designed elements like seawalls or dams to augment the protective benefits of each component. One example of this kind of hybrid approach is the so-called tsunami mitigation park, which combines a designed hillscape with vegetation. Despite the increasing popularity of tsunami mitigation parks, the protective benefits they provide are poorly understood and incompletely quantified. As a consequence of this lack of understanding, current designs might not maximize the protective benefits of tsunami mitigation parks. Here, we numerically model the interactions between a single row of hills with an incoming tsunami to identify the mechanisms through which the park protects the coast. We initialize the tsunami as an N wave that propagates to shore and impacts the coast directly. We find that partial reflection of the incoming wave is the most important mechanism by which hills reduce the kinetic energy that propagates onshore. The protective benefit of tsunami mitigation parks is thus comparable to that of a small wall, at least for tsunamis with amplitudes that are comparable to the hill height. We also show that hills could elevate potential damage in the immediate vicinity of the hills where flow speeds increase compared to a planar beach, suggesting the need to include a buffer zone behind the hills into a strategic park design. 2021-10-27T19:58:06Z 2021-10-27T19:58:06Z 2020 2021-05-07T18:54:16Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134099 en 10.1073/pnas.1911857117 Proceedings of the National Academy of Sciences of the United States of America Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Proceedings of the National Academy of Sciences PNAS |
| spellingShingle | Lunghino, Brent Santiago Tate, Adrian F Mazereeuw, Miho Muhari, Abdul Giraldo, Francis X Marras, Simone Suckale, Jenny The protective benefits of tsunami mitigation parks and ramifications for their strategic design |
| title | The protective benefits of tsunami mitigation parks and ramifications for their strategic design |
| title_full | The protective benefits of tsunami mitigation parks and ramifications for their strategic design |
| title_fullStr | The protective benefits of tsunami mitigation parks and ramifications for their strategic design |
| title_full_unstemmed | The protective benefits of tsunami mitigation parks and ramifications for their strategic design |
| title_short | The protective benefits of tsunami mitigation parks and ramifications for their strategic design |
| title_sort | protective benefits of tsunami mitigation parks and ramifications for their strategic design |
| url | https://hdl.handle.net/1721.1/134099 |
| work_keys_str_mv | AT lunghinobrent theprotectivebenefitsoftsunamimitigationparksandramificationsfortheirstrategicdesign AT santiagotateadrianf theprotectivebenefitsoftsunamimitigationparksandramificationsfortheirstrategicdesign AT mazereeuwmiho theprotectivebenefitsoftsunamimitigationparksandramificationsfortheirstrategicdesign AT muhariabdul theprotectivebenefitsoftsunamimitigationparksandramificationsfortheirstrategicdesign AT giraldofrancisx theprotectivebenefitsoftsunamimitigationparksandramificationsfortheirstrategicdesign AT marrassimone theprotectivebenefitsoftsunamimitigationparksandramificationsfortheirstrategicdesign AT suckalejenny theprotectivebenefitsoftsunamimitigationparksandramificationsfortheirstrategicdesign AT lunghinobrent protectivebenefitsoftsunamimitigationparksandramificationsfortheirstrategicdesign AT santiagotateadrianf protectivebenefitsoftsunamimitigationparksandramificationsfortheirstrategicdesign AT mazereeuwmiho protectivebenefitsoftsunamimitigationparksandramificationsfortheirstrategicdesign AT muhariabdul protectivebenefitsoftsunamimitigationparksandramificationsfortheirstrategicdesign AT giraldofrancisx protectivebenefitsoftsunamimitigationparksandramificationsfortheirstrategicdesign AT marrassimone protectivebenefitsoftsunamimitigationparksandramificationsfortheirstrategicdesign AT suckalejenny protectivebenefitsoftsunamimitigationparksandramificationsfortheirstrategicdesign |