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| Titel |
Evidence of terrigenous organic matter exported to deep-sea of South China
Sea during super typhoon Haiyan (Yolanda) |
| VerfasserIn |
Hsing-Chien Juan, Chih-Chieh Su, Yuan-Pin Chang, Yu-Haung Chen |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250141662
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| Publikation (Nr.) |
 EGU/EGU2017-5196.pdf |
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| Zusammenfassung |
| Recent studies state the abundance of particulate organic matter (POM) could transfer rapidly
from land to deep sea basin under the conditions of extreme climate event and has an effect
on local carbon cycle. However, the transport processes and mechanisms of terrigenous
sediments into deep sea basin are still unclear. South China Sea (SCS), the largest marginal
sea located beside western Pacific Ocean which is one of the area encounters the most
frequent typhoons, received 700 million tons of sediments and a significant amount of
terrestrial organic matter per year. In this study, we present the analysis results of total
organic carbon (TOC), organic C/N ratio and δ13C of sediments collected from the
SCS deep sea basin by gravity cores during 2014 and 2016. Our results suggest
both C/N ratio and δ13C of turbidite at core-tops might be affected by terrestrial
organic matter which was delivered from central Philippines by super typhoon Haiyan
(Yolanda). Although the TOC concentration of the typhoon related deposits (0. 50%) is
slightly less than non-event layers (0. 57%), the low sediment accumulation rate
(0.22cm/yr) during non-event periods, compare to typhoon related thick turbidite
layer (∼87 cm) implies the super typhoon may play an important role on export
terrestrial organic matter into deep sea basin and has impact to carbon cycle of SCS. |
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