From contact at sz4d.org Fri Jan 15 11:28:36 2021 From: contact at sz4d.org (SZ4D Office) Date: Sat Dec 10 20:28:09 2022 Subject: [SZ4D] SZ4D International Webinar with Onno Oncken - Next Friday (1/22/2021) Message-ID: SZ4D International Webinars: Slow slip in subduction zones - Do deformation fabrics and and laboratory experiments explain instrumental observation? *Onno Oncken* - Helmholtz-Zentrum Potsdam, GFZ; Telegrafenberg, D-14473 Potsdam, Germany *January 22nd, 2021 at 9 AM PST* Zoom Webinar Register Now ? Cataclasites are a characteristic rock type in drilled active as well as exposed fossil subduction faults. They exhibit evidence for pervasive pressure solution and abundant hydrofracturing. Slip velocities associated with the formation of the different types of cataclasites and conditions controlling slip are so far poorly constrained. Here, we explore exposed sections of subduction faults and their microstructures and apply recently proposed constitutive laws to compare predicted deformation rates with instrumental observations from subduction zones. Basic arguments are derived from estimating the maximum strain rates using fault scaling relationships, and comparing these with rates predicted from experimental flow laws for cataclastic flow. The prevailing pore pressure ratio and state of elastic loading during the seismic cycle turn out to be the controlling parameters linking the variety of rock fabric observations with instrumentally recorded slip velocities governing transient creep episodes. SZ4D presents International Webinars, a series where the working groups invite international scientists to present on different topics relevant to their research and region. SZ4D values international voices and invites you to learn from these folks. Register Now ? -------------- next part -------------- An HTML attachment was scrubbed... URL: From contact at sz4d.org Thu Jan 21 11:49:50 2021 From: contact at sz4d.org (SZ4D Office) Date: Sat Dec 10 20:28:09 2022 Subject: [SZ4D] Register for Onno Oncken's Webinar Tomorrow Message-ID: Don't forget to register for Onno Oncken's webinar, happening tomorrow at 9AM PST! Register Now ? SZ4D International Webinars: Slow slip in subduction zones - Do deformation fabrics and and laboratory experiments explain instrumental observation? *Onno Oncken* - Helmholtz-Zentrum Potsdam, GFZ; Telegrafenberg, D-14473 Potsdam, Germany *January 22nd, 2021 at 9 AM PST* Zoom Webinar Cataclasites are a characteristic rock type in drilled active as well as exposed fossil subduction faults. They exhibit evidence for pervasive pressure solution and abundant hydrofracturing. Slip velocities associated with the formation of the different types of cataclasites and conditions controlling slip are so far poorly constrained. Here, we explore exposed sections of subduction faults and their microstructures and apply recently proposed constitutive laws to compare predicted deformation rates with instrumental observations from subduction zones. Basic arguments are derived from estimating the maximum strain rates using fault scaling relationships, and comparing these with rates predicted from experimental flow laws for cataclastic flow. The prevailing pore pressure ratio and state of elastic loading during the seismic cycle turn out to be the controlling parameters linking the variety of rock fabric observations with instrumentally recorded slip velocities governing transient creep episodes. SZ4D presents International Webinars, a series where the working groups invite international scientists to present on different topics relevant to their research and region. SZ4D values international voices and invites you to learn from these folks. Register Now ? -------------- next part -------------- An HTML attachment was scrubbed... URL: From tplank at ldeo.columbia.edu Tue Jan 26 07:56:04 2021 From: tplank at ldeo.columbia.edu (Terry Plank) Date: Sat Dec 10 20:28:09 2022 Subject: [SZ4D] Workshop on Novel Instrumentation to Anticipate Volcanic Eruptions Message-ID: Dear Colleagues, Final Call to Attend -- Workshop on Novel Instrumentation to Anticipate Volcanic Eruptions Feb 1, 2021 (11 am to 2 pm Eastern US) Feb 2, 2021 (6 pm to 9 pm Eastern US) This workshop is open to all participants interested in cutting edge instrumentation designed to anticipate volcanic eruptions. The workshop will take place online, and occur at different time windows on two different days to accommodate as much of an international audience as possible. There will be a mix of talks and panels aimed at sharing the latest developments and to encourage networking. The agenda is now posted on the workshop website: https://sites.google.com/view/novelvolcanoinstr/home?authuser=0 Please register here to indicate your interest in attending: https://forms.gle/jck7JRoJBBaP5T578 Organizers: Terry Plank, tplank@ldeo.columbia.edu Einat Lev, einatlev@ldeo.columbia.edu Yves Moussallam, yves.moussallam@ldeo.columbia.edu