| Titre | Exploring records of typhoon variability in eastern China over the last 2000 years |
| |
| Auteur | Yang, Y ; Zhou, L;
Normandeau, A; Jia, J; Yin, Q; Gao, S |
| Source | Geological Society of America Bulletin 2020 p. 1-10, https://doi.org/10.1130/B35600.1 |
| Image |  |
| Année | 2020 |
| Séries alt. | Ressources naturelles Canada, Contribution externe 20200395 |
| Éditeur | Geological Society of America |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.1130/B35600.1 |
| Media | papier; en ligne; numérique |
| Formats | pdf |
| Région | Jiangsu coast |
| Lat/Long OENS | 120.0000 123.0000 35.0000 31.0000 |
| Sujets | effets climatiques; climat; changements du niveau de la mer; géologie de l'environnement; Nature et environnement; Sciences et technologie |
| Illustrations | cartes de localisation; tableaux; diagraphies lithologiques; enregistrements de carottage; modèles; cartes d'anomalies magnétiques |
| Diffusé | 2020 03 06 |
| Résumé | (disponible en anglais seulement)
How climate controls tropical cyclone variability has critical implications for modern human society but is not well understood due to the short length of
observational records. To probe this knowledge gap, we present a synthesis of intense typhoon activity from the northwestern Pacific over the past 2000 years, which is supported by a new, well-resolved tidal flat sedimentary record from the Jiangsu
coast, eastern China. The record reveals nine intervals of typhoon frequency, indicating that the frequency of intense typhoons has varied on multi-centennial scales over the past 2000 years. Our synthesis shows strong evidence for a seesaw pattern
of intense typhoon frequency between southeastern China and Japan and Korea. This pattern can be explained by the El Niño and Southern Oscillation-East Asian Monsoon- sea surface temperature hypothesis, which potentially explains the basin-wide
typhoon climate in the northwestern Pacific region. A shift in typhoon activity was identified from 550-280 to 280-50 yr B.P. during the Little Ice Age, when typhoon activity changed from active to quiescent or vice versa. Centennial-scale shifts in
Intertropical Convergence Zone and Western Pacific Warm Pool sea surface temperature are likely to be the primary forcing mechanisms driving this shift. Results obtained here provide links between typhoon activity and the El Niño and Southern
Oscillation, the East Asian Monsoon, and the Western Pacific Warm Pool sea surface temperature, and therefore improve our ability to fully assess intense typhoon activity in future climate warming. |
| Sommaire | (Résumé en langage clair et simple, non publié)
Nous avons identifié des couches de sédiments dans les marais qui représentent l'activité des typhons dans l'est de la Chine. Nous avons
observés que la fréquence historique des typhons intenses dépassait souvent les niveaux préhistoriques. |
| GEOSCAN ID | 327188 |
|
|