Atlantic Ocean modulated hydroclimate of the subtropical northeastern Mexico since the last glacial maximum and comparison with the southern US
Atlantic Ocean modulated hydroclimate of the subtropical northeastern Mexico since the last glacial maximum and comparison with the southern US
复制标题
自末次盛冰期以来大西洋调节墨西哥东北部亚热带水文气候以及与美国南部的比较
DOI：
10.1016/j.epsl.2015.11.048
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发表时间：
2016
影响因子：
5.3
通讯作者：
R. Lozano
中科院分区：
文献类型：
--
作者：
P. Roy;Axel Rivero;J. L. Sánchez;L. Beramendi;G. Muthusankar;R. Lozano
根据El Potosi盆地沉积物序列的化学成分和放射性碳定年得到的代用记录提供了末次盛冰期以来墨西哥东北部亚热带水文气候变化的信息。最少量的径流和更多的碳酸盐沉积在> - 19ka代表了LGM。与LGM相比，冰川消融更加湿润，并且在~ 19-12 ka期间增强的径流从相对湿润的流域输送了更多含钛碎屑。在冰川消融期间，盆地在b ølling- allero ød期间比Heinrich Stadial 1和Younger Dryas期间吸收了更多的径流。在~ 10-1 ka期间径流量的减少和在~ 4-1 ka期间未风化的含硅碎屑的沉积表明，与冰川消融相比，全新世更加干燥。墨西哥东北部和美国南部的水文气候在LGM和消冰期间是同步的。随着墨西哥湾变暖，夏季降水增多，从干燥的LGM向湿润的b ølling- allerd转变。然而，全新世区域水文气候的差异有待进一步评价。
Proxy records generated from chemical composition and radiocarbon dating of a sediment sequence collected from the El Potosi Basin provide information about variable hydroclimate of the subtropical northeastern Mexico since the last glacial maximum (LGM). Minimal amounts of runoff and more carbonate deposition during> 19 ka represent the LGM. The deglaciation was wetter compared to the LGM and enhanced runoff during∼ 19–12 ka transported more Ti-bearing clastics from a relatively humid watershed. Over the deglaciation, the basin received more runoff during the Bølling-Allerød compared to the Heinrich Stadial 1 and Younger Dryas. Reduction in the amount of runoff during∼ 10–1 ka and deposition of unweathered Si-bearing clastics during∼ 4–1 ka suggest that the Holocene was drier compared to the deglaciation. Hydroclimates of the northeastern Mexico and southern US were synchronous during the LGM as well as deglaciation. Change from the drier LGM to wetter Bølling-Allerød occurred as the Gulf of Mexico became warmer and the region received more summer precipitation. However, the dissimilarities observed in regional hydroclimates of the Holocene need further evaluation.
影响因子：
4
作者：
M. Kirby;S. Feakins;Nicole Bonuso;Joanna M. Fantozzi;C. Hiner
通讯作者：
M. Kirby;S. Feakins;Nicole Bonuso;Joanna M. Fantozzi;C. Hiner