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Diverse glacial ventilation in deep Pacific: An integrated record from Mariana Trench and Magellan Seamounts over the last 1.2 Myr [Global and Planetary Change, volume 230, November 2023, 104279]: Comment
Global and Planetary Change ( IF 4.0 ) Pub Date : 2024-10-24 , DOI: 10.1016/j.gloplacha.2024.104614
Yang Wang, Tongzheng Zhang, Harunur Rashid

Yi (2023) proposed a new deep Western Pacific ventilation hypothesis using beryllium (10Be/9Be) and 230Thex dates, magnetostratigraphy, and element-based tuning data from two box cores and one gravity core. However, given the low sedimentation rates of these cores and uncertain stratigraphy, we suggest that some interpretations require further clarifications and corrections. The low sedimentation rates cast doubt on the validity of the millennial-scale western Pacific bottom-water oxygenation variability. The lack of unsupported explanations about the newly found periodicity in the Mariana Trench and Magellan Seamounts records raises concern about the confidence of the age models. The phasing between the North Atlantic deep water and Antarctic bottom water formation and atmospheric pCO2 in the deep Western Pacific setting is unclear.

中文翻译:


太平洋深处的多样化冰川通风:马里亚纳海沟和麦哲伦海山在过去 1.2 Myr 的综合记录 [全球和行星变化,第 230 卷,2023 年 11 月,104279]:评论



Yi (2023) 提出了一个新的西太平洋深部通风假说,使用铍 (10Be/9Be) 和 230Thex 测年、磁地层学和来自两个箱形岩心和一个重力岩心的基于元素的调谐数据。然而,鉴于这些岩芯的低沉积速率和不确定的地层,我们建议一些解释需要进一步澄清和更正。低沉积速率使人们对千年尺度西太平洋海底水氧化变化的有效性产生了怀疑。在马里亚纳海沟和麦哲伦海山记录中缺乏关于新发现的周期性的无根据解释,这引起了人们对年龄模型可信度的担忧。北大西洋深水和南极底水形成与西太平洋深处大气 pCO2 之间的相位尚不清楚。
更新日期:2024-10-24
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