Decadal to centennial-scale climate variability during the Holocene and Late Glacial based on long CALYPSO cores off southern and subtropical Chile

智利南部的大陆边缘...提供了独特的机会，研究南半球的古环境变化在全新世和晚冰期的短，十年到百年的时间尺度。我们建议从42 ° S和50°S之间的纬向样带中恢复4个长CALYPSO活塞岩心，并从23°S的Mejillones湾中恢复亚热带智利的另一个岩心。南部的核心预计将提供大陆气候变化的高分辨率记录，特别是由东南西风带控制的降雨变率。根据南纬40 ° ~ 44°之间大陆斜坡上短重力岩心的现有数据，沉积速率应该足够高，足以记录下百年尺度的变化。再往南，在智利峡湾或附近的岩心位置可以用来重建巴塔哥尼亚冰川范围内的全新世和冰消期变化。此外，我们计划从梅希隆湾恢复一个长岩心，那里的层状沉积物来自短岩心。这个亚热带地区可能捕获来自热带太平洋的气候信号，这将允许比较高南纬度和热带对智利附近十年到百年尺度气候和海洋变化的影响

The southern Chilean continental margin... offers unique opportunities to study SouthernHemisphere paleoenvironmental changes during the Holocene and the late glacial on short,decadal to centennial time-scales. We propose to recover 4 long CALYPSO piston cores froma latitudinal transect between 42 and 50°S and an additional core off subtropical Chile fromthe Bay of Mejillones at 23°S. The southern cores are expected to provide high resolutionrecords of continental climate changes, particularly rainfall variability controlled by thesouthern westerly wind belt. Based on available data from short gravity cores on thecontinental slope between 40 and 44°S, sedimentationsrates should be high enough to recordsubcentennial scale variations. Further south, core locations in or near the Chilean fjords canbe used to reconstruct Holocene and deglacial changes in the extent of the Patagonian icesheet.In addition, we plan to recover a long core from Bay of Mejillones where laminatedsediments are reported from short cores. This subtropical region likely captures climatesignals originating from the Tropical Pacific which will allow to compare high southernlatitude and tropical influences on decadal to centennial-scale climate and ocean variabilityoff Chile