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新研究揭示地幔过渡带存在水循环 快报文章
地球科学快报,2022年第19期
作者:  王晓晨
Microsoft Word(31Kb)  |  收藏  |  浏览/下载:670/0  |  提交时间:2022/10/10
Mantle transition zone  water cycle  
地幔过渡带存在明显的俯冲板片界面 快报文章
地球科学快报,2020年第22期
作者:  赵纪东
Microsoft Word(14Kb)  |  收藏  |  浏览/下载:420/0  |  提交时间:2020/11/25
Mantle transition zone  Plate  Oceanic subduction  Seismic exploration  
Effect of Water on Lattice Thermal Conductivity of Ringwoodite and Its Implications for the Thermal Evolution of Descending Slabs 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (13)
作者:  Marzotto, Enrico;  Hsieh, Wen-Pin;  Ishii, Takayuki;  Chao, Keng-Hsien;  Golabek, Gregor J.;  Thielmann, Marcel;  Ohtani, Eiji
收藏  |  浏览/下载:22/0  |  提交时间:2020/05/25
hydrous ringwoodite  lattice thermal conductivity  mantle transition zone  water cycle  
The Mantle Transition Zone Hosts the Missing HIMU Reservoir Beneath Eastern China 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (9)
作者:  Qian, Sheng-Ping;  Nichols, Alexander R. L.;  Zhang, Le;  Xu, Yi-Gang;  Li, Jie;  Guo, Yu-Long;  Ren, Zhong-Yuan
收藏  |  浏览/下载:29/0  |  提交时间:2020/07/02
late Cenozoic basalts  HIMU component  mantle transition zone  carbonated mantle source  
Metastable Olivine Wedge Beneath the Japan Sea Imaged by Seismic Interferometry 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (6)
作者:  Shen, Zhichao;  Zhan, Zhongwen
收藏  |  浏览/下载:18/0  |  提交时间:2020/07/02
metastable olivine  inter-source interferometry  deep earthquake mechanism  dry slab core  mantle transition zone  
Intraplate volcanism originating from upwelling hydrous mantle transition zone 期刊论文
NATURE, 2020
作者:  Calabrese, Claudia;  Davidson, Natalie R.;  Demircioglu, Deniz;  Fonseca, Nuno A.;  He, Yao;  Kahles, Andre;  Kjong-Van Lehmann;  Liu, Fenglin;  Shiraishi, Yuichi;  Soulette, Cameron M.;  Urban, Lara;  Greger, Liliana;  Li, Siliang;  Liu, Dongbing;  Perry, Marc D.;  Xiang, Qian;  Zhang, Fan;  Zhang, Junjun;  Bailey, Peter;  Erkek, Serap;  Hoadley, Katherine A.;  Hou, Yong;  Huska, Matthew R.;  Kilpinen, Helena;  Korbel, Jan O.;  Marin, Maximillian G.;  Markowski, Julia;  Nandi, Tannistha;  Pan-Hammarstrom, Qiang;  Pedamallu, Chandra Sekhar;  Siebert, Reiner;  Stark, Stefan G.;  Su, Hong;  Tan, Patrick;  Waszak, Sebastian M.;  Yung, Christina;  Zhu, Shida;  Awadalla, Philip;  Creighton, Chad J.;  Meyerson, Matthew;  Ouellette, B. F. Francis;  Wu, Kui;  Yang, Huanming;  Brazma, Alvis;  Brooks, Angela N.;  Goke, Jonathan;  Raetsch, Gunnar;  Schwarz, Roland F.;  Stegle, Oliver;  Zhang, Zemin
收藏  |  浏览/下载:118/0  |  提交时间:2020/05/13

Most magmatism occurring on Earth is conventionally attributed to passive mantle upwelling at mid-ocean ridges, to slab devolatilization at subduction zones, or to mantle plumes. However, the widespread Cenozoic intraplate volcanism in northeast China(1-3) and the young petit-spot volcanoes(4-7) offshore of the Japan Trench cannot readily be associated with any of these mechanisms. In addition, the mantle beneath these types of volcanism is characterized by zones of anomalously low seismic velocity above and below the transition zone(8-12) (a mantle level located at depths between 410 and 660 kilometres). A comprehensive interpretation of these phenomena is lacking. Here we show that most (or possibly all) of the intraplate and petit-spot volcanism and low-velocity zones around the Japanese subduction zone can be explained by the Cenozoic interaction of the subducting Pacific slab with a hydrous mantle transition zone. Numerical modelling indicates that 0.2 to 0.3 weight per cent of water dissolved in mantle minerals that are driven out from the transition zone in response to subduction and retreat of a tectonic plate is sufficient to reproduce the observations. This suggests that a critical amount of water may have accumulated in the transition zone around this subduction zone, as well as in others of the Tethyan tectonic belt(13) that are characterized by intraplate or petit-spot volcanism and low-velocity zones in the underlying mantle.


The widespread intraplate volcanism in northeast China and the unusual '  petit-spot'  volcanoes offshore Japan could have resulted from the interaction of the subducting Pacific slab with a hydrous mantle transition zone.


  
Live-animal imaging of native haematopoietic stem and progenitor cells 期刊论文
NATURE, 2020, 578 (7794) : 278-+
作者:  Gerstung, Moritz;  Jolly, Clemency;  Leshchiner, Ignaty;  Dentro, Stefan C.;  Gonzalez, Santiago;  Rosebrock, Daniel;  Mitchell, Thomas J.;  Rubanova, Yulia;  Anur, Pavana;  Yu, Kaixian;  Tarabichi, Maxime;  Deshwar, Amit;  Wintersinger, Jeff;  Kleinheinz, Kortine;  Vazquez-Garcia, Ignacio;  Haase, Kerstin;  Jerman, Lara;  Sengupta, Subhajit;  Macintyre, Geoff;  Malikic, Salem;  Donmez, Nilgun;  Livitz, Dimitri G.;  Cmero, Marek;  Demeulemeester, Jonas;  Schumacher, Steven;  Fan, Yu;  Yao, Xiaotong;  Lee, Juhee;  Schlesner, Matthias;  Boutros, Paul C.;  Bowtell, David D.;  Zhu, Hongtu;  Getz, Gad;  Imielinski, Marcin;  Beroukhim, Rameen;  Sahinalp, S. Cenk;  Ji, Yuan;  Peifer, Martin;  Markowetz, Florian;  Mustonen, Ville;  Yuan, Ke;  Wang, Wenyi;  Morris, Quaid D.;  Spellman, Paul T.;  Wedge, David C.;  Van Loo, Peter;  Deshwar, Amit G.;  Adams, David J.;  Campbell, Peter J.;  Cao, Shaolong;  Christie, Elizabeth L.;  Cun, Yupeng;  Dawson, Kevin J.;  Drews, Ruben M.;  Eils, Roland;  Fittall, Matthew;  Garsed, Dale W.;  Ha, Gavin;  Lee-Six, Henry;  Martincorena, Inigo;  Oesper, Layla;  Peto, Myron;  Raphael, Benjamin J.;  Salcedo, Adriana;  Shi, Ruian;  Shin, Seung Jun;  Spiro, Oliver;  Stein, Lincoln D.;  Vembu, Shankar;  Wheeler, David A.;  Yang, Tsun-Po
收藏  |  浏览/下载:45/0  |  提交时间:2020/07/03

The biology of haematopoietic stem cells (HSCs) has predominantly been studied under transplantation conditions(1,2). It has been particularly challenging to study dynamic HSC behaviour, given that the visualization of HSCs in the native niche in live animals has not, to our knowledge, been achieved. Here we describe a dual genetic strategy in mice that restricts reporter labelling to a subset of the most quiescent long-term HSCs (LT-HSCs) and that is compatible with current intravital imaging approaches in the calvarial bone marrow(3-5). We show that this subset of LT-HSCs resides close to both sinusoidal blood vessels and the endosteal surface. By contrast, multipotent progenitor cells (MPPs) show greater variation in distance from the endosteum and are more likely to be associated with transition zone vessels. LT-HSCs are not found in bone marrow niches with the deepest hypoxia and instead are found in hypoxic environments similar to those of MPPs. In vivo time-lapse imaging revealed that LT-HSCs at steady-state show limited motility. Activated LT-HSCs show heterogeneous responses, with some cells becoming highly motile and a fraction of HSCs expanding clonally within spatially restricted domains. These domains have defined characteristics, as HSC expansion is found almost exclusively in a subset of bone marrow cavities with bone-remodelling activity. By contrast, cavities with low bone-resorbing activity do not harbour expanding HSCs. These findings point to previously unknown heterogeneity within the bone marrow microenvironment, imposed by the stages of bone turnover. Our approach enables the direct visualization of HSC behaviours and dissection of heterogeneity in HSC niches.


A dual genetic strategy enables the labelling and in vivo imaging of native long-term haematopoietic stem cells in the mouse calvarial bone marrow.


  
A humidity index for the summer monsoon transition zone in East Asia 期刊论文
CLIMATE DYNAMICS, 2019, 53: 5511-5527
作者:  Zeng, Jian;  Zhang, Qiang
收藏  |  浏览/下载:19/0  |  提交时间:2019/11/27
East Asia  Humidity index  Summer monsoon transition zone  ENSO  
Phytoplankton decline in the eastern North Pacific transition zone associated with atmospheric blocking 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (10) : 3485-3493
作者:  Le, Chengfeng;  Wu, Shuyu;  Hu, Chuanmin;  Beck, Marcus W.;  Yang, Xuchao
收藏  |  浏览/下载:23/0  |  提交时间:2019/11/26
atmospheric blocking  Ekman transport  global change  jet stream  North Pacific transition zone  phytoplankton  
The Mantle Transition Zone in Fennoscandia: Enigmatic High Topography Without Deep Mantle Thermal Anomaly 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019, 46 (7) : 3652-3662
作者:  Makushkina, Anna;  Tauzin, Benoit;  Tkalcic, Hrvoje;  Thybo, Hans
收藏  |  浏览/下载:16/0  |  提交时间:2019/11/26
mantle transition zone  receiver functions  Baltic Shield  Fennoscandia