From ljhwang at ucdavis.edu Mon Nov 1 19:28:24 2021 From: ljhwang at ucdavis.edu (Lorraine Hwang) Date: Mon, 1 Nov 2021 19:28:24 -0700 Subject: [CIG-ALL] CIG November 2021 Newsletter Message-ID: <94598C36-DA83-497F-8819-343690BD9179@ucdavis.edu> November 2021 Volume 10 Issue 4 Research Highlight ASPECT: surface processes and basin formation through a two-way coupling with FastScape The FastScape-ASPECT coupling is a two-way coupling that allows the landscape evolution model FastScape to deform the surface of ASPECT. Geodynamic models commonly simulate surface motions by using either a free surface or a sticky air layer. Either method can produce unrealistic highs or lows in the topography because they do not account for erosional and depositional processes that redistribute surface material through time. This redistribution not only helps obtain realistic topographies, but the change in surface loading can have widespread effects on model evolution, such as lengthening the time a fault remains active (Olive et al., 2014), promoting model asymmetry and rift migration, or altering the thermal state through sediment blanketing. FastScape is an open-source code available in multiple languages (Fortran, C++, and Python; Braun and Willett, 2013) that deforms a surface through routines that mimic geomorphic processes. This is primarily done using three methods: 1) hillslope diffusion, 2) the Stream Power Law (SPL), and 3) marine transport. On the continents, hillslope diffusion will move ... [continued ] contributed by Derek Neubarth, Anne Glerum, Sascha Brune, Thilo Wrona, Jean Braun, and Xiaoping Yuan GFZ Potsdam full article Connecting with Governance Dear Community, As we reach the end of the third five-year grant that has financially supported CIG, it is natural to stop and reflect on the scientific progress that this support has been enabled. To help document that progress, this spring the community provided a number of one-page research highlights , illustrating the breadth and impact of CIG on solid earth sciences. Reading through these projects, I want to share my reflections on where CIG stands. First, these highlights describe almost 50 projects involving more than 125 researchers using nine different CIG-supported software packages. They describe projects ranging from the innovative use of geodynamics software in the classroom to algorithmic development that will be critical to solve the next generation of geodynamic problems. CIG software has been used to study geological processes across the globe and beyond, including: a structurally complex anticline in Northern Iraq using full-wave-form Inversion, the origin of strike-slip faulting the Aegean, subduction and delamination beneath the Apennines, delamination beneath the western Mediterranean, the origin of Cameroon Volcanic line, the origin of the Canary Islands, the evolution of the Malawi rift, the San Andreas fault, a variety of studies of western North America, imaging the Alaskan lithosphere, sea level indicators above a slab window in southern Argentina, a large-scale seismic inversion for the North Island, New Zealand, the origin of intraplate earthquakes in the Korean Peninsula, crustal resurfacing on Venus, and seismic waves generated by impacts on Mars. Other studies have investigated the effect of core size on dynamo generation, the impact of crystal orientation on flow, magma dynamics, formation of rifted continental margins, and earthquake rupture processes. These highlights are only the tip of the iceberg, isostatically speaking, as I can think of many other papers over the past five years describing research that was enabled by CIG software that are not represented. Having been around since CIG was formed, I have watched CIG evolve and grow. We initially envisioned that CIG would host a team of software engineers who would provide well-documented, open-source software tools for the geodynamics community. I don’t think any of us who were involved in the formation of CIG really knew how to define ‘the geodynamics community.’ Almost half of the research highlights submitted this year use seismic tools, something we would not have envisioned 15 years ago. Most researchers today see CIG as an organization that brings communities of researchers together; geoscientists, software engineers, and applied mathematicians collaboratively work on CIG projects. Some of our most successful activities are hackathons, software tutorials (both in person and virtual), our software citation efforts, and software best practices guidelines. These are not the activities we envision at the start of CIG. As we look to the future, we must make sure that we are a welcoming community for all researchers and we must become a community where people feel that they belong. To help enable this we are thinking about how we can make geodynamics research and computational resources accessible to researchers who don’t have access to leadership-class computing resources. At the beginning of this column I mentioned the financial support that NSF provides and this has been an essential catalyst for CIG; however, many of you reading this newsletter (along with many others) have volunteered your time, energy, and knowledge; without these contributions CIG could not have been successful. This is not said nearly as often as it should be: thanks to all of you who have given one of your most precious resources, your time, to help make CIG the community it is today. Scott King, Chair, Science Steering Committee News CIG Business Meeting This year's CIG Business Meeting will be a virtual event on Thursday November 18 @ 1P-2:30P PT. The Annual Business Meeting is your chance to catch up on past activities and hear about 2022 activities. Results of the 2021 elections will be announced. In addition, join the breakout discussions to provide feedback on collaborations, engagement, and issues in justice, equity, diversity and inclusion. To attend, remember to register prior to the meeting. [register ] SMOREs Become a mentor! The Summer Modeling Research Experiences program provides opportunities for undergraduate researchers in geodynamics. The program aims to increase diversity and competency in Earth and computational science and targets recruiting towards underrepresented students in STEM. Building on our highly successful first year, we are actively recruiting for mentors for 2022. See the program website to learn more about 2021 SMOREs. If you are interested in becoming a mentor or have questions, please contact Lorraine by December 31, 2021. AGU Abstracts Presenting at the 2021 Fall AGU meeting? Help fellow scientists find your research by including your abstract in the list of CIG related presentations. Check the list . If you cited CIG software in your abstract, your presentation may already be included. To list your presentation, send your abstract link to: events at geodynamics.org AGU Awards Congratulations to the following community members who have been recognized by AGU for their outstanding work in their field: Jason Morgan Early Career Award Juliane Dannberg, University of Florida Francis Birch Lecture Taras Gerya, ETH Zurich Governance Elections 2021 Elections are now open for positions on the Executive and Science Steering Committees. Candidates for the 2 open seats on the Executive Committee are: Seat 1. Louis Moresi or Carolina Lithgow-Bertelloni; Seat 2. Brad Aagaard or Daniel Peter. Candidates for the 4 open seats on the Science Steering Committee are: Seat 1. Harriet Lau or Joyce Sim; Seat 2. Peter Driscoll or Rakesh Yadav; Seat 3. Dave May or Anne Reinarz; and Seat 4 (2 year). Ebru Bozdag or Qinya Liu. View the Candidate Statements . Contact your Member Representative to vote. Many thanks to EC member Katie Cooper and Louis Moresi and SSC members Ebru Bozdag, Min Chen, Krista Soderlund, and Cian Wilson for their contributions to the community. Voting closes November 11, 2021. Call for Focused Working Groups CIG seeks to encourage new ideas from the community by forming Focused Working Groups (FWG). FWG's should address a specific topic and have a clearly defined scope e.g. workshop, white paper, benchmark, etc. A FWG should define concrete outcome(s) achievable within a short time frame, < 2 years. Anyone can propose one! We look forward to your ideas in continuing the CIG community's dynamic leadership in the Earth sciences. [email ] Events Webinars Webinars are held the second Thursday of the month at 2P PT. Registration is required. Please see our website for registration links for each event. October 14 SMOREs Showcase November 11 Veterans Day November 18 CIG Business Meeting @ 1P PT December none - AGU January 12 Raj Moulik, Princeton University February 9 Ryan Orvedahl, UC Davis March 9 Kali Allison, UC Davis April 13 Robert Walker, University at Buffalo May 12 tbd Remember to join our forum to receive announcements for these and other 2021-2022 events. forum Links Have a question? Start a discussion! Citation builder for CIG software. Notify us of your recent publications. Copyright © 2021 Computational Infrastructure for Geodynamics, All rights reserved. Our mailing address is: Computational Infrastructure for Geodynamics One Shields Avenue UC Davis Davis, CA 95616 Best, -Lorraine ***************************** Lorraine Hwang, Ph.D. - Director Computational Infrastructure for Geodynamics UC Davis 530.752.3656 geodynamics.org out of office: november 22 - december 17 -------------- next part -------------- An HTML attachment was scrubbed... URL: From ljhwang at ucdavis.edu Wed Nov 17 10:35:23 2021 From: ljhwang at ucdavis.edu (Lorraine Hwang) Date: Wed, 17 Nov 2021 10:35:23 -0800 Subject: [CIG-ALL] REMINDER to REGISTER: CIG Annual Business Meeting *** Tomorrow *** Message-ID: REMINDER **** CIG Business Meeting is tomorrow **** Please remember to REGISTER in advance. The meeting will start promptly at 13:00 PT. -------------- next part -------------- An HTML attachment was scrubbed... URL: From piceda at gfz-potsdam.de Thu Nov 18 03:26:17 2021 From: piceda at gfz-potsdam.de (Constanza Rodriguez Piceda) Date: Thu, 18 Nov 2021 12:26:17 +0100 Subject: [CIG-ALL] EGU22 | Session GD7.5 Physical state of the lithosphere-asthenosphere system: challenges and insights from integration of seismic tomography with potential field and mineral physics data Message-ID: Dear colleagues, we want to draw your attention and invite you to contribute to our EGU-2022 session GD7.5 Physical state of the lithosphere-asthenosphere system: challenges and insights from integration of seismic tomography with potential field and mineral physics data https://meetingorganizer.copernicus.org/EGU22/sessionprogramme#GD7 https://meetingorganizer.copernicus.org/EGU22/session/42017 *Session description*: The original theory of plate tectonics is a kinematic model with forces only representing qualitative measures. To understand inter- and intraplate dynamics driven by mantle thermodynamics and gravitational forces at interplay with rock rheology, we need comprehensive images of the in-situ material properties (density, viscosity) and underlying state conditions (temperature T, pressure P) of the lithospheric plate and its transition into the upper mantle. One key insight into the mantle physical configuration is provided by seismology, namely tomography imaging of seismic velocity perturbations. The interpretation of seismic velocity in terms of mantle composition and T and P conditions, however, is highly non-unique. Despite an ever-growing data pool of laboratory-derived relations between seismic velocity of mantle minerals and their T and P derivatives of density and elastic constants, inversion of seismological information for in-situ bulk rock T is an ill-posed problem. To reduce the number of potential solutions, we rely on additional independent information on mantle composition, T and P (such as from xenoliths) and mantle density (such as from gravity field data). In addition, effects of anelasticity (e.g., frequency dependent wave velocity), grain size and fluid content should be considered, but these material behaviors are currently less well explored. An alternative to thermodynamics-based inversions is provided by empirical approaches to calculate mantle temperature from seismic tomography models. Finally, the diversity and inconsistency of seismic tomography models for any specific region can result in a correspondingly wide spectrum of derived mantle temperature configurations. With this session we intend to resume open discussions on how to exploit mantle seismic velocity models to derive valuable conclusions on the composition and temperature-pressure conditions within the upper and lithospheric mantle. Thus, we want to focus on those mantle domains revealing the largest rheological variability and exerting strongest impacts on crustal and surface deformation. The session is intended to cover the multi-disciplinary spectrum of observations and interpretations for the upper mantle configuration. We invite contributions addressing state-of-the-art techniques, case studies that combine mantle seismic velocities with seismology-independent observations as well as presentations that highlight the challenges and inconsistencies in the field. *Solicited author*: Saskia Goes Kind regards, Your conveners: Judith Bott, Constanza Rodriguez Piceda, Ajay Kumar, Javier Fullea, Stewart Fishwick -- Constanza Rodriguez Piceda Section 4.5: Basin Modelling E-Mail: piceda at gfz-potsdam.de ___________________________________ Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum GFZ Stiftung des öff. Rechts Land Brandenburg Telegrafenberg, 14473 Potsdam -------------- next part -------------- An HTML attachment was scrubbed... URL: From ljhwang at ucdavis.edu Thu Nov 18 09:01:09 2021 From: ljhwang at ucdavis.edu (Lorraine Hwang) Date: Thu, 18 Nov 2021 09:01:09 -0800 Subject: [CIG-ALL] NEW RELEASE: Rayleigh v1.0.0 Message-ID: <2E6E456D-2CBA-4A35-AB34-7E1280D74EA2@ucdavis.edu> We are please announce the release of Rayleigh v1.0.0 released on November 12 with various new features and bugfixes. Among others, this release includes the following significant changes: New: Online, up-to-date documentation is now available here . The source files are provided as part of the repository and are stored in the doc directory. New: Users can now specify custom generic boundary conditions and/or initial conditions. The online documentation provides instructions for both options within the Physics Controls section. New: Users are free to fully specify the set of constant and nonconstant coefficients that define the system of PDEs solved by Rayleigh. This capability is described in the “Custom Reference State” section of the documentation. *New: Checkpoint format has changed such that each checkpoint resides in its own directory. All files and information needed to restart a model, including a copy of main_input , are now stored within each numbered checkpoint directory. Download the latest release here . - Nicholas Featherstone, Philipp Edelmann, Rene Gassmoeller, Loren Matilsky, Ryan Orvedahl, Cian Wilson, and many other contributors. -------------- next part -------------- An HTML attachment was scrubbed... URL: