Influence of Tsunami Aspect Ratio on Near and Far-Field Tsunami Amplitude
This study presents a numerical investigation of the source aspect ratio (AR) influence on tsunami decay characteristics with an emphasis in near and far-field differences for two initial wave shapes Pure Positive Wave and N-wave. It is shown that, when initial total energy for both tsunami types is...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Geosciences |
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| Online Access: | https://www.mdpi.com/2076-3263/11/4/178 |
| _version_ | 1797537477796298752 |
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| author | Natalia K. Sannikova Harvey Segur Diego Arcas |
| author_facet | Natalia K. Sannikova Harvey Segur Diego Arcas |
| author_sort | Natalia K. Sannikova |
| collection | DOAJ |
| description | This study presents a numerical investigation of the source aspect ratio (AR) influence on tsunami decay characteristics with an emphasis in near and far-field differences for two initial wave shapes Pure Positive Wave and N-wave. It is shown that, when initial total energy for both tsunami types is kept the same, short-rupture tsunami with more concentrated energy are likely to be more destructive in the near-field, whereas long rupture tsunami are more dangerous in the far-field. The more elongated the source is, the stronger the directivity and the slower the amplitude decays in the intermediate- and far-fields. We present evidence of this behavior by comparing amplitude decay rates from idealized sources and showing their correlation with that observed in recent historical events of similar AR. |
| first_indexed | 2024-03-10T12:16:43Z |
| format | Article |
| id | doaj.art-b01bab8829d7478f9a1e8bc2cead96d0 |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-03-10T12:16:43Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Geosciences |
| spelling | doaj.art-b01bab8829d7478f9a1e8bc2cead96d02023-11-21T15:50:56ZengMDPI AGGeosciences2076-32632021-04-0111417810.3390/geosciences11040178Influence of Tsunami Aspect Ratio on Near and Far-Field Tsunami AmplitudeNatalia K. Sannikova0Harvey Segur1Diego Arcas2Joint Institute for Marine and Atmospheric Research, University of Hawai’i at Mānoa, Honolulu, HI 96822, USADepartment of Applied Mathematics, University of Colorado, Boulder, CO 80309, USAPacific Marine Environmental Laboratory, NOAA Center for Tsunami Research, National Oceanic and Atmospheric Administration, Seattle, WA 98115, USAThis study presents a numerical investigation of the source aspect ratio (AR) influence on tsunami decay characteristics with an emphasis in near and far-field differences for two initial wave shapes Pure Positive Wave and N-wave. It is shown that, when initial total energy for both tsunami types is kept the same, short-rupture tsunami with more concentrated energy are likely to be more destructive in the near-field, whereas long rupture tsunami are more dangerous in the far-field. The more elongated the source is, the stronger the directivity and the slower the amplitude decays in the intermediate- and far-fields. We present evidence of this behavior by comparing amplitude decay rates from idealized sources and showing their correlation with that observed in recent historical events of similar AR.https://www.mdpi.com/2076-3263/11/4/178tsunaminumerical modelingwave decaytsunami sensitivitytsunami source aspect ratio |
| spellingShingle | Natalia K. Sannikova Harvey Segur Diego Arcas Influence of Tsunami Aspect Ratio on Near and Far-Field Tsunami Amplitude Geosciences tsunami numerical modeling wave decay tsunami sensitivity tsunami source aspect ratio |
| title | Influence of Tsunami Aspect Ratio on Near and Far-Field Tsunami Amplitude |
| title_full | Influence of Tsunami Aspect Ratio on Near and Far-Field Tsunami Amplitude |
| title_fullStr | Influence of Tsunami Aspect Ratio on Near and Far-Field Tsunami Amplitude |
| title_full_unstemmed | Influence of Tsunami Aspect Ratio on Near and Far-Field Tsunami Amplitude |
| title_short | Influence of Tsunami Aspect Ratio on Near and Far-Field Tsunami Amplitude |
| title_sort | influence of tsunami aspect ratio on near and far field tsunami amplitude |
| topic | tsunami numerical modeling wave decay tsunami sensitivity tsunami source aspect ratio |
| url | https://www.mdpi.com/2076-3263/11/4/178 |
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