Detrital in situ and meteoric Beryllium 10 measurements from samples taken before and after Hurricane Maria in Dominica
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| Autores principales: | , , , , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2019
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| _version_ | 1867168572824879104 |
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| author | Quock, Melinda Schmidt, Amanda H Corbett, Lee B Bierman, Paul R Hidy, Alan J Caffee, Marc W |
| author_facet | Quock, Melinda Schmidt, Amanda H Corbett, Lee B Bierman, Paul R Hidy, Alan J Caffee, Marc W |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Tropical islands, including many in island arcs, are susceptible to recurring disturbances from extreme storms. To test whether such storms bias isotopic indicators of long-term erosion, we measured 10Be in samples collected before and after Hurricane Maria (2017, category five) from Dominica, an andesitic island in the Caribbean. Populations of before- and after-storm concentrations of 10Be are indistinguishable (n = 7 for in situ, n = 11 for meteoric); however, individual sample sites replicate less well with isotopic concentrations in samples taken before and after the storm varying by an average of 12%. These data suggest that processes controlling the depth and amount of near-surface erosion on Dominica during extreme storms are stochastic. Erosion rates determined from in situ 10Be are low compared to similarly steep and wet areas (median = 0.082 mm/yr, n = 12) and appear to be controlled by orographic precipitation. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_910131 |
| institution | PANGAEA |
| language | en |
| publishDate | 2019 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Detrital in situ and meteoric Beryllium 10 measurements from samples taken before and after Hurricane Maria in Dominica Quock, Melinda Schmidt, Amanda H Corbett, Lee B Bierman, Paul R Hidy, Alan J Caffee, Marc W Caribbean; cosmogenic; detrital; erosion rate; tropical storm Tropical islands, including many in island arcs, are susceptible to recurring disturbances from extreme storms. To test whether such storms bias isotopic indicators of long-term erosion, we measured 10Be in samples collected before and after Hurricane Maria (2017, category five) from Dominica, an andesitic island in the Caribbean. Populations of before- and after-storm concentrations of 10Be are indistinguishable (n = 7 for in situ, n = 11 for meteoric); however, individual sample sites replicate less well with isotopic concentrations in samples taken before and after the storm varying by an average of 12%. These data suggest that processes controlling the depth and amount of near-surface erosion on Dominica during extreme storms are stochastic. Erosion rates determined from in situ 10Be are low compared to similarly steep and wet areas (median = 0.082 mm/yr, n = 12) and appear to be controlled by orographic precipitation. |
| title | Detrital in situ and meteoric Beryllium 10 measurements from samples taken before and after Hurricane Maria in Dominica |
| topic | Caribbean; cosmogenic; detrital; erosion rate; tropical storm |
| url | https://doi.org/10.1594/PANGAEA.910131 |