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Brothers Arc Flux 兄弟电弧焊剂
Pub Date : 2019-07-05 DOI: 10.14379/iodp.proc.376.2019
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引用次数: 13
Volume 369: Australia Cretaceous Climate and Tectonics 第369卷:澳大利亚白垩纪气候和构造
Pub Date : 2019-05-25 DOI: 10.14379/iodp.proc.369.2019
R. W. Hobbs, B. T. Huber, K. Bogus
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引用次数: 10
Expedition 372A methods 远征372A方法
Pub Date : 2019-05-05 DOI: 10.14379/IODP.PROC.372A.102.2019
I. Pecher, P. Barnes, L. Levay, S. Bourlange, M. Brunet, S. Cardona, M. Clennell, A. Cook, M. Crundwell, B. Dugan, J. Elger, D. Gamboa, A. Georgiopoulou, A. Greve, Shuoshuo Han, K. Heeschen, G. Hu, G. Kim, H. Kitajima, H. Koge, X. Li, K. Machado, D. Mcnamara, G. Moore, J. Mountjoy, M. Nole, S. Owari, M. Paganoni, K. Petronotis, P. Rose, E. Screaton, U. Shankar, C. Shepherd, M. Torres, M. Underwood, X. Wang, A. Woodhouse, Hung-Yu Wu
I.A. Pecher, P.M. Barnes, L.J. LeVay, S.M. Bourlange, M.M.Y. Brunet, S. Cardona, M.B. Clennell, A.E. Cook, M.P. Crundwell, B. Dugan, J. Elger, D. Gamboa, A. Georgiopoulou, A. Greve, S. Han, K.U. Heeschen, G. Hu, G.Y. Kim, H. Kitajima, H. Koge, X. Li, K.S. Machado, D.D. McNamara, G.F. Moore, J.J. Mountjoy, M.A. Nole, S. Owari, M. Paganoni, K.E. Petronotis, P.S. Rose, E.J. Screaton, U. Shankar, C.L. Shepherd, M.E. Torres, M.B. Underwood, X. Wang, A.D. Woodhouse, and H.-Y. Wu2
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引用次数: 2
Creeping Gas Hydrate Slides 爬行式天然气水合物滑梯
Pub Date : 2019-05-05 DOI: 10.14379/iodp.proc.372a.2019
I. Pecher, P. M. Barnes, L. Levay
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引用次数: 13
Expedition 372B/375 summary 远征372B/375总结
Pub Date : 2019-05-05 DOI: 10.14379/IODP.PROC.372B375.101.2019
D. Saffer, L. Wallace, P. Barnes, I. Pecher, K. Petronotis, L. Levay, R. Bell, M. Crundwell, C. H. Engelmann de Oliveira, Å. Fagereng, P. Fulton, A. Greve, R. Harris, Y. Hashimoto, A. Hüpers, M. Ikari, Y. Ito, H. Kitajima, S. Kutterolf, H. Lee, X. Li, M. Luo, P. Malie, F. Meneghini, J. Morgan, A. Noda, H. Rabinowitz, H. M. Savage, C. Shepherd, S. Shreedharan, E. Solomon, M. Underwood, M. Wang, A. Woodhouse, S. Bourlange, M. Brunet, S. Cardona, M. Clennell, A. E. Cook, B. Dugan, J. Elger, D. Gamboa, A. Georgiopoulou, S. Han, K. Heeschen, G. Hu, G. Kim, H. Koge, K. Machado, D. Mcnamara, G. Moore, J. Mountjoy, M. Nole, S. Owari, M. Paganoni, P. Rose, E. Screaton, U. Shankar, M. Torres, X. Wang, H. Wu
Slow slip events (SSEs) at the northern Hikurangi subduction margin, New Zealand, are among the best-documented shallow SSEs on Earth. International Ocean Discovery Program Expeditions 372 and 375 were undertaken to investigate the processes and in situ conditions that underlie subduction zone SSEs at the northern Hikurangi Trough. We accomplished this goal by (1) coring and geophysical logging at four sites, including penetration of an active thrust fault (the Pāpaku fault) near the deformation front, the upper plate above the SSE source region, and the incoming sedimentary succession in the Hikurangi Trough and atop the Tūranganui Knoll seamount; and (2) installing borehole observatories in the Pāpaku fault and in the upper plate overlying the slow slip source region. Logging-while-drilling (LWD) data for this project were acquired as part of Expedition 372, and coring, wireline logging, and observatory installations were conducted during Expedition 375. Northern Hikurangi subduction margin SSEs recur every 1–2 y and thus provide an ideal opportunity to monitor deformation and associated changes in chemical and physical properties throughout the slow slip cycle. In situ measurements and sampling of material from the sedimentary section and oceanic basement of the subducting plate reveal the rock properties, composition, lithology, and structural character of material that is transported downdip into the SSE source region. A recent seafloor geodetic experiment raises the possibility that SSEs at northern Hikurangi may propagate to the trench, indicating that the shallow thrust fault (the Pāpaku fault) targeted during Expeditions 372 and 375 may also lie in the SSE rupture area and host a portion of the slip in these events. Hence, sampling and logging at this location provides insights into the composition, physical properties, and architecture of a shallow fault that may host slow slip. Expeditions 372 and 375 were designed to address three fundamental scientific objectives: Characterize the state and composition of the incoming plate and shallow fault near the trench, which comprise the protolith and initial conditions for fault zone rock at greater depth and which may itself host shallow slow slip; Characterize material properties, thermal regime, and stress conditions in the upper plate directly above the SSE source region; and Install observatories in the Pāpaku fault near the deformation front and in the upper plate above the SSE source to measure temporal variations in deformation, temperature, and fluid flow. The observatories will monitor volumetric strain (via pore pressure as a proxy) and the evolution of physical, hydrological, and chemical properties throughout the SSE cycle. Together, the coring, logging, and observatory data will test a suite of hypotheses about the fundamental mechanics and behavior of SSEs and their relationship to great earthquakes along the subduction interface.
新西兰北部Hikurangi俯冲边缘的慢滑事件(sse)是地球上记录最好的浅层sse之一。国际海洋发现计划的第372号和第375号考察队负责调查Hikurangi海槽北部俯冲带sse的过程和现场条件。为了实现这一目标,我们在四个测点进行了取心和地球物理测井,包括变形前沿附近的一条活动逆冲断层(Pāpaku断层)的侵彻,SSE源区上方的上板块,以及Hikurangi海槽和Tūranganui Knoll海山顶部的传入沉积序列;(2)在Pāpaku断裂带和慢滑震源上覆板块设置钻孔观测台。该项目的随钻测井(LWD)数据是远征372的一部分,在远征375期间进行了取心、电缆测井和观测装置。北Hikurangi俯冲边缘的sse每隔1-2 y就会出现一次,因此为监测整个慢滑旋回的变形和相关的化学和物理性质变化提供了理想的机会。从俯冲板块的沉积剖面和大洋基底进行的现场测量和物质取样,揭示了向下输送到SSE源区的物质的岩石性质、组成、岩性和结构特征。最近的海底大地测量实验表明,Hikurangi北部的SSE可能会传播到海沟,这表明372和375探险期间所针对的浅层逆冲断层(Pāpaku断层)也可能位于SSE破裂区,并在这些事件中产生部分滑动。因此,在这个位置进行采样和测井,可以深入了解可能存在慢滑的浅层断层的组成、物理性质和结构。372号和375号科考旨在解决三个基本的科学目标:描述进入的板块和靠近海沟的浅层断层的状态和组成,它们构成了更深层断层带岩石的原岩和初始条件,并且本身可能承载浅层慢滑;表征SSE源区域正上方的上板的材料特性、热状态和应力条件;在靠近变形前沿的Pāpaku断层和SSE震源上方的上板块设置观测台,测量变形、温度和流体流量的时间变化。观测站将监测整个SSE循环的体积应变(通过孔隙压力作为代理)以及物理、水文和化学性质的演变。岩心、测井和观测数据将共同检验一系列关于sse的基本力学和行为以及它们与俯冲界面沿线大地震的关系的假设。
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引用次数: 19
Site U1520 网站U1520
Pub Date : 2019-05-05 DOI: 10.14379/iodp.proc.372b375.105.2019
P. M. Barnes, L. Wallace, D. Saffer, I. Pecher, K. Petronotis, L. Levay, R. Bell, M. Crundwell, C. H. Engelmann de Oliveira, Å. Fagereng, P. Fulton, A. Greve, R. Harris, Y. Hashimoto, A. Hüpers, M. Ikari, Y. Ito, H. Kitajima, S. Kutterolf, H. Lee, X. Li, M. Luo, P. Malie, F. Meneghini, J. Morgan, A. Noda, H. Rabinowitz, H. M. Savage, C. Shepherd, S. Shreedharan, E. Solomon, M. Underwood, M. Wang, A. Woodhouse, S. Bourlange, M. Brunet, S. Cardona, M. Clennell, A. Cook, B. Dugan, J. Elger, D. Gamboa, A. Georgiopoulou, S. Han, K. Heeschen, G. Hu, G. Kim, H. Koge, K. Machado, D. Mcnamara, G. F. Moore, J. Mountjoy, M. Nole, S. Owari, M. Paganoni, P. Rose, E. Screaton, U. Shankar, M. Torres, X. Wang, H. Wu
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引用次数: 6
Expedition 372A summary 远征372A总结
Pub Date : 2019-05-05 DOI: 10.14379/IODP.PROC.372A.101.2019
P. Barnes, I. Pecher, L. Levay, S. Bourlange, M. Brunet, S. Cardona, M. Clennell, A. Cook, M. Crundwell, B. Dugan, J. Elger, D. Gamboa, A. Georgiopoulou, A. Greve, Shuoshuo Han, K. Heeschen, G. Hu, G. Kim, H. Kitajima, H. Koge, X. Li, K. Machado, D. Mcnamara, G. Moore, J. Mountjoy, M. Nole, S. Owari, M. Paganoni, K. Petronotis, P. Rose, E. Screaton, U. Shankar, C. Shepherd, M. Torres, M. Underwood, X. Wang, A. Woodhouse, Hung-Yu Wu
International Ocean Discovery Program (IODP) Expedition 372 combined two research topics: actively deforming gas hydrate– bearing landslides (IODP Proposal 841-APL) and slow slip events on subduction faults (IODP Proposal 781A-Full). This expedition included a coring and logging-while-drilling (LWD) program for Proposal 841-APL and a LWD program for Proposal 781A-Full. The coring and observatory placement for Proposal 781A-Full were completed during Expedition 375. The Expedition 372A Proceedings volume focuses only on the results related to Proposal 841APL. The results of the Hikurangi margin drilling are found in the Expedition 372B/375 Proceedings volume. Gas hydrates have long been suspected of being involved in seafloor failure. Not much evidence, however, has been found to date for gas hydrate–related submarine landslides. Solid, ice-like gas hydrate in sediment pores is generally thought to increase seafloor strength, which is confirmed by a number of laboratory measurements. Dissociation of gas hydrate to water and overpressured gas, on the other hand, may weaken and destabilize sediments, potentially causing submarine landslides. The Tuaheni Landslide Complex (TLC) on the Hikurangi margin shows evidence for active, creeping deformation. Intriguingly, the landward edge of creeping coincides with the pinch-out of the base of gas hydrate stability on the seafloor. We therefore proposed that gas hydrate may be involved in creep-like deformation and presented several hypotheses that may link gas hydrates to slow deformation. Alternatively, creeping may not be related to gas hydrates but instead be caused by repeated pressure pulses or linked to earthquake-related liquefaction. Plans for Expedition 372A included a coring and LWD program to test our landslide hypotheses. Because of weather-related downtime, the gas hydrate–related program was reduced and we focused on a set of experiments at Site U1517 in the creeping part of the TLC. We conducted a LWD and coring program to 205 m below the seafloor through the TLC and the gas hydrate stability zone, followed by temperature and pressure tool deployments.
国际海洋发现计划(IODP)的372探险队结合了两个研究课题:主动变形含天然气水合物的滑坡(IODP提案841-APL)和俯冲断层上的慢滑事件(IODP提案781A-Full)。此次考察包括提案841-APL的取心和随钻测井(LWD)计划,以及提案781A-Full的随钻测井计划。781A-Full方案的取芯和观测台安置在375探险期间完成。Expedition 372A Proceedings卷只关注与提案841APL相关的结果。Hikurangi边缘钻探的结果见于远征372B/375论文集。长期以来,人们一直怀疑天然气水合物与海底破坏有关。然而,迄今为止还没有发现多少与天然气水合物有关的海底滑坡的证据。沉积物孔隙中的固体、冰状气体水合物通常被认为可以增加海底的强度,这一点已被许多实验室测量所证实。另一方面,天然气水合物分解成水和超压气体,可能会削弱和破坏沉积物,潜在地导致海底滑坡。位于Hikurangi边缘的Tuaheni滑坡复合体(TLC)显示了活跃的爬行变形的证据。有趣的是,爬行的陆地边缘与海底天然气水合物稳定性的基础的挤压一致。因此,我们提出天然气水合物可能参与了蠕变样变形,并提出了几个可能将天然气水合物与缓慢变形联系起来的假设。或者,爬行可能与天然气水合物无关,而是由反复的压力脉冲引起的,或者与地震相关的液化有关。探险队372A的计划包括取芯和随钻测井程序,以测试我们的滑坡假设。由于与天气有关的停机时间,与天然气水合物相关的项目减少了,我们专注于在TLC爬行部分的Site U1517进行的一系列实验。通过TLC和天然气水合物稳定带,我们在海底以下205m处进行了LWD和取心作业,随后部署了温度和压力工具。
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引用次数: 6
Expedition 372B/375 methods 探险372B/375方法
Pub Date : 2019-05-05 DOI: 10.14379/IODP.PROC.372B375.102.2019
Laura M. Wallace, D. Saffer, P. Barnes, I. Pecher, K. Petronotis, L. Levay, Rebecca E. Bell, M. Crundwell, C. E. D. Oliveira, Å. Fagereng, P. Fulton, A. Greve, Robert N. Harris, Yoshitaka Hashimoto, A. Hüpers, M. Ikari, Yoshihiro Ito, H. Kitajima, S. Kutterolf, H. Lee, X. Li, M. Luo, P. Malie, F. Meneghini, Julia K. Morgan, Atsushi Noda, H. Rabinowitz, H. Savage, C. Shepherd, S. Shreedharan, E. Solomon, M. Underwood, Maomao Wang, A. Woodhouse, S. Bourlange, M. Brunet, S. Cardona, M. B. Clennell, A. E. Cook, Brandon Dugan, J. Elger, Davide Gamboa, A. Georgiopoulou, S. Han, K. Heeschen, G. Hu, G. Y. Kim, H. Koge, K. Machado, D. D. McNamara, Gregory F. Moore, J. Mountjoy, M. Nole, S. Owari, M. Paganoni, P. Rose, E. Screaton, Uma Shankar, M. E. Torres, X. Wang, H. Wu
L.M. Wallace, D.M. Saffer, P.M. Barnes, I.A. Pecher, K.E. Petronotis, L.J. LeVay, R.E. Bell, M.P. Crundwell, C.H. Engelmann de Oliveira, A. Fagereng, P.M. Fulton, A. Greve, R.N. Harris, Y. Hashimoto, A. Hüpers, M.J. Ikari, Y. Ito, H. Kitajima, S. Kutterolf, H. Lee, X. Li, M. Luo, P.R. Malie, F. Meneghini, J.K. Morgan, A. Noda, H.S. Rabinowitz, H.M. Savage, C.L. Shepherd, S. Shreedharan, E.A. Solomon, M.B. Underwood, M. Wang, A.D. Woodhouse, S.M. Bourlange, M.M.Y. Brunet, S. Cardona, M.B. Clennell, A.E. Cook, B. Dugan, J. Elger, D. Gamboa, A. Georgiopoulou, S. Han, K.U. Heeschen, G. Hu, G.Y. Kim, H. Koge, K.S. Machado, D.D. McNamara, G.F. Moore, J.J. Mountjoy, M.A. Nole, S. Owari, M. Paganoni, P.S. Rose, E.J. Screaton, U. Shankar, M.E. Torres, X. Wang, and H.-Y. Wu2
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引用次数: 15
Hikurangi Subduction Margin Coring, Logging, and Observatories Hikurangi俯冲边缘取芯、测井和观测
Pub Date : 2019-05-05 DOI: 10.14379/iodp.proc.372b375.2019
L. Wallace, D. Saffer, P. Barnes, I. Pecher, K. Petronotis, L. Levay
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引用次数: 52
Corinth Active Rift Development 科林斯活跃裂谷发育
Pub Date : 2019-02-28 DOI: 10.14379/iodp.proc.381.2019
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引用次数: 17
期刊
Proceedings of the International Ocean Discovery Program
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