DOGAMI Open-File Report O-81-09, Seismic and Volcanic Hazard
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Bilek Earth and Environmental Sciences Dept
Susan L. Bilek Earth and Environmental Sciences Dept. New Mexico Institute of Mining and Technology, Socorro, NM 87801 Email: [email protected] Webpage: https://nmt.edu/academics/ees/faculty/sbilek.php Professional Preparation: B.S., with honors, Geosciences, minor in Economics, Penn State University, May 1996 M.S., Earth Sciences/Geophysics, University of California, Santa Cruz, June 1998 M.S. Thesis title: Lower mantle heterogeneity beneath Eurasia imaged by parametric migration of shear waves Ph.D. Earth Sciences/Geophysics, University of California, Santa Cruz, June 2001 Ph.D. Dissertation title: Multi-scale examination of seismogenic zone processes in circum- Pacific subduction zones Turner Postdoctoral Fellow, Dept. Geological Sciences, University of Michigan, 2001-2003 Appointments: Professor, Earth and Environmental Science Dept., New Mexico Tech, 2014 – present Associate Professor, Earth and Environmental Sciences Dept., New Mexico Tech, 2008 – 2014 Assistant Professor, Earth and Environmental Sciences Dept., New Mexico Tech, 2003 – 2008 Selected Recent Synergistic Activities: National/International: Board of Directors, Seismological Society of America, 2020-2022 Associate Editor, Geophysical Research Letters, 2020-present Editorial Board, Tectonophysics, 2016-present Associate Guest Editor, Subduction Top to Bottom 2, special issue of Geospheres, 2016-present PI of IRIS PASSCAL Instrument Center, Oct 2013-present IRIS Board of Directors, 2010-2012, Board secretary 2012 Reviewer: NSF, NNSA, Science, Science Advances, Nature, -
Washington Division of Geology and Earth Resources Open File Report
l 122 EARTHQUAKES AND SEISMOLOGY - LEGAL ASPECTS OPEN FILE REPORT 92-2 EARTHQUAKES AND Ludwin, R. S.; Malone, S. D.; Crosson, R. EARTHQUAKES AND SEISMOLOGY - LEGAL S.; Qamar, A. I., 1991, Washington SEISMOLOGY - 1946 EVENT ASPECTS eanhquak:es, 1985. Clague, J. J., 1989, Research on eanh- Ludwin, R. S.; Qamar, A. I., 1991, Reeval Perkins, J. B.; Moy, Kenneth, 1989, Llabil quak:e-induced ground failures in south uation of the 19th century Washington ity of local government for earthquake western British Columbia [abstract). and Oregon eanhquake catalog using hazards and losses-A guide to the law Evans, S. G., 1989, The 1946 Mount Colo original accounts-The moderate sized and its impacts in the States of Califor nel Foster rock avalanches and auoci earthquake of May l, 1882 [abstract). nia, Alaska, Utah, and Washington; ated displacement wave, Vancouver Is Final repon. Maley, Richard, 1986, Strong motion accel land, British Columbia. erograph stations in Oregon and Wash Hasegawa, H. S.; Rogers, G. C., 1978, EARTHQUAKES AND ington (April 1986). Appendix C Quantification of the magnitude 7.3, SEISMOLOGY - NETWORKS Malone, S. D., 1991, The HAWK seismic British Columbia earthquake of June 23, AND CATALOGS data acquisition and analysis system 1946. [abstract). Berg, J. W., Jr.; Baker, C. D., 1963, Oregon Hodgson, E. A., 1946, British Columbia eanhquak:es, 1841 through 1958 [ab Milne, W. G., 1953, Seismological investi earthquake, June 23, 1946. gations in British Columbia (abstract). stract). Hodgson, J. H.; Milne, W. G., 1951, Direc Chan, W.W., 1988, Network and array anal Munro, P. S.; Halliday, R. J.; Shannon, W. -
Processing of Strong-Motion Accelerograms: Needs, Options and Consequences
Soil Dynamics and Earthquake Engineering 25 (2005) 93–115 www.elsevier.com/locate/soildyn Processing of strong-motion accelerograms: needs, options and consequences David M. Boorea, Julian J. Bommerb,* aUS Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, USA bCivil and Environmental Engineering, Imperial College London, London SW7 2AZ, UK Accepted 25 October 2004 Abstract Recordings from strong-motion accelerographs are of fundamental importance in earthquake engineering, forming the basis for all characterizations of ground shaking employed for seismic design. The recordings, particularly those from analog instruments, invariably contain noise that can mask and distort the ground-motion signal at both high and low frequencies. For any application of recorded accelerograms in engineering seismology or earthquake engineering, it is important to identify the presence of this noise in the digitized time- history and its influence on the parameters that are to be derived from the records. If the parameters of interest are affected by noise then appropriate processing needs to be applied to the records, although it must be accepted from the outset that it is generally not possible to recover the actual ground motion over a wide range of frequencies. There are many schemes available for processing strong-motion data and it is important to be aware of the merits and pitfalls associated with each option. Equally important is to appreciate the effects of the procedures on the records in order to avoid errors in the interpretation and use of the results. Options for processing strong-motion accelerograms are presented, discussed and evaluated from the perspective of engineering application. -
Department D'analyse De Surete
COMMISSARIAT A LENERGIE ATOMIQUE XA04NO298 INSTITUT DE PROTECTION ET DE SURETE NUCLEAIRE DEPARTMENT D'ANALYSE DE SURETE INIS-XA-N--027 RAPPORT DAS/733 MAIN FACTORS AECTING STRONG GROUND MOTION CALCULATIONS CRITICAL REVIEW AND ASESSMENT. MOHAMMADIOUN B. PECKER A. RAPPORT DAS/733 MAIN FACTORS AECTING STRONG GROUND MOTION CALCULATIONS CRITICAL REVIEW AND ASSESSMENT. MOHAMMADIOUN B. , PECKER A. 1990 * DAS/SASC ** Soci6t6 G6odynamique et Structure I I MAIN FACTORS AFFECTING STRONG GROUND MOTION CALCULATIONS: CRITICAL REVIEW AND ASSESSMENT BAGHER MOHAMMADIOUN * AND ALUN PECKER" 1. 1. INTRODUCTION in the interests of guarding lives and property against the effects of earthquakes, building codes are frequently enforced when recting conventional structures, usually calling for simple, static calculations. Where more vulnerable facilities are involved, the failure of which, or of parts of which, could subject the environment to harmful substances, more sophisticated methods are used to compute or verify their design, often accompanied by safety margins intended to compen- sate for uncertainties encountered at various stages of the analysis that begins with input seismic data and culminates with an effective anti-seismic dsign. The forthcoming discussion will deal with what is known of the characteristics of strong ground motion, highly variable according to contM without entering into the problems raised by scismotectonic studies, which actually constitute the first aspect that must be addressed when performing such an analysis. Our conclusion will be devoted to cogent R & D work in this area. 1.2. STRONG MOTION DATA The earliest record obtained with a strong motion accelerograph dates back to 1933 and was triggered by the Long Beach, California earthquake. -
OCEAN/ESS 410 1 Lab 3. the Juan De Fuca Plate Please Write out Your
OCEAN/ESS 410 Lab 3. The Juan de Fuca Plate Please write out your answers on a separate sheet of paper. In this exercise you are going to be looking at the bathymetry of the Juan de Fuca plate region, identifying interesting features and their characteristics, and attempting to interpret what you see. Some of the questions may be difficult for you to answer now (although hopefully not at the end of the Quarter) – part of the objective is to get you to look carefully at the maps and think rather that immediately writing down an answer. The Instructor and TAs will be coming around the lab answering questions. Figure 1 shows the plate boundaries for the Juan de Fuca plate region and you will use this as your road map as you explore the Juan de Fuca plate with the program GeoMapApp, a versatile program that is used by researchers to look at bathymetry and other seafloor data. To run GeoMapApp do the following 1. Start GeoMapApp on the lab computer from the Start menu or from the Desktop Icon if you have one. If it asks you to install a new version you do not have to. 2. Select the default Mercator Base Map (left hand map) 3. Learn to use the “Zoom In”, “Zoom Out” and “Pan the Map” tools. You can use the “Zoom In” tool either by clicking on the map or holding the mouse button down to rubber-band a box of interest. The Overlays menu allows you to add a Distance Scale and Color Bar. -
Recent Movements of the Juan De Fuca Plate System
JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 89, NO. B8, PAGES 6980-6994, AUGUST 10, 1984 Recent Movements of the Juan de Fuca Plate System ROBIN RIDDIHOUGH! Earth PhysicsBranch, Pacific GeoscienceCentre, Departmentof Energy, Mines and Resources Sidney,British Columbia Analysis of the magnetic anomalies of the Juan de Fuca plate system allows instantaneouspoles of rotation relative to the Pacific plate to be calculatedfrom 7 Ma to the present.By combiningthese with global solutions for Pacific/America and "absolute" (relative to hot spot) motions, a plate motion sequencecan be constructed.This sequenceshows that both absolute motions and motions relative to America are characterizedby slower velocitieswhere younger and more buoyant material enters the convergencezone: "pivoting subduction."The resistanceprovided by the youngestportion of the Juan de Fuca plate apparently resulted in its detachmentat 4 Ma as the independentExplorer plate. In relation to the hot spot framework, this plate almost immediately began to rotate clockwisearound a pole close to itself such that its translational movement into the mantle virtually ceased.After 4 Ma the remainder of the Juan de Fuca plate adjusted its motion in responseto the fact that the youngest material entering the subductionzone was now to the south. Differencesin seismicityand recent uplift betweennorthern and southernVancouver Island may reflect a distinction in tectonicstyle betweenthe "normal" subductionof the Juan de Fuca plate to the south and a complex "underplating"occurring as the Explorer plate is overriddenby the continent.The history of the Explorer plate may exemplifythe conditionsunder which the self-drivingforces of small subductingplates are overcomeby the influenceof larger, adjacent plates. The recent rapid migration of the absolutepole of rotation of the Juan de Fuca plate toward the plate suggeststhat it, too, may be nearingthis condition. -
The Official Magazine of The
OceTHE OFFICIALa MAGAZINEn ogOF THE OCEANOGRAPHYra SOCIETYphy CITATION Smith, L.M., J.A. Barth, D.S. Kelley, A. Plueddemann, I. Rodero, G.A. Ulses, M.F. Vardaro, and R. Weller. 2018. The Ocean Observatories Initiative. Oceanography 31(1):16–35, https://doi.org/10.5670/oceanog.2018.105. DOI https://doi.org/10.5670/oceanog.2018.105 COPYRIGHT This article has been published in Oceanography, Volume 31, Number 1, a quarterly journal of The Oceanography Society. Copyright 2018 by The Oceanography Society. All rights reserved. USAGE Permission is granted to copy this article for use in teaching and research. Republication, systematic reproduction, or collective redistribution of any portion of this article by photocopy machine, reposting, or other means is permitted only with the approval of The Oceanography Society. Send all correspondence to: [email protected] or The Oceanography Society, PO Box 1931, Rockville, MD 20849-1931, USA. DOWNLOADED FROM HTTP://TOS.ORG/OCEANOGRAPHY SPECIAL ISSUE ON THE OCEAN OBSERVATORIES INITIATIVE The Ocean Observatories Initiative By Leslie M. Smith, John A. Barth, Deborah S. Kelley, Al Plueddemann, Ivan Rodero, Greg A. Ulses, Michael F. Vardaro, and Robert Weller ABSTRACT. The Ocean Observatories Initiative (OOI) is an integrated suite of instrumentation used in the OOI. The instrumented platforms and discrete instruments that measure physical, chemical, third section outlines data flow from geological, and biological properties from the seafloor to the sea surface. The OOI ocean platforms and instrumentation to provides data to address large-scale scientific challenges such as coastal ocean dynamics, users and discusses quality control pro- climate and ecosystem health, the global carbon cycle, and linkages among seafloor cedures. -
Cenozoic Thermal, Mechanical and Tectonic Evolution of the Rio Grande Rift
JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 91, NO. B6, PAGES 6263-6276, MAY 10, 1986 Cenozoic Thermal, Mechanical and Tectonic Evolution of the Rio Grande Rift PAUL MORGAN1 Departmentof Geosciences,Purdue University,West Lafayette, Indiana WILLIAM R. SEAGER Departmentof Earth Sciences,New Mexico State University,Las Cruces MATTHEW P. GOLOMBEK Jet PropulsionLaboratory, CaliforniaInstitute of Technology,Pasadena Careful documentationof the Cenozoicgeologic history of the Rio Grande rift in New Mexico reveals a complexsequence of events.At least two phasesof extensionhave been identified.An early phase of extensionbegan in the mid-Oligocene(about 30 Ma) and may have continuedto the early Miocene (about 18 Ma). This phaseof extensionwas characterizedby local high-strainextension events (locally, 50-100%,regionally, 30-50%), low-anglefaulting, and the developmentof broad, relativelyshallow basins, all indicatingan approximatelyNE-SW •-25ø extensiondirection, consistent with the regionalstress field at that time.Extension events were not synchronousduring early phase extension and were often temporally and spatiallyassociated with major magmatism.A late phaseof extensionoccurred primarily in the late Miocene(10-5 Ma) with minor extensioncontinuing to the present.It was characterizedby apparently synchronous,high-angle faulting givinglarge verticalstrains with relativelyminor lateral strain (5-20%) whichproduced the moderuRio Granderift morphology.Extension direction was approximatelyE-W, consistentwith the contemporaryregional stress field. Late phasegraben or half-grabenbasins cut and often obscureearly phasebroad basins.Early phase extensionalstyle and basin formation indicate a ductilelithosphere, and this extensionoccurred during the climax of Paleogenemagmatic activity in this zone.Late phaseextensional style indicates a more brittle lithosphere,and this extensionfollowed a middle Miocenelull in volcanism.Regional uplift of about1 km appearsto haveaccompanied late phase extension, andrelatively minor volcanism has continued to thepresent. -
Letter Regarding the Status of Open File Report Entitled, "Basin & Range-Age Reactivation of Rocky Mountain Structures
# I 2 BUREAU OF ECONOiC GEOLOGY THE UNIVERSITY OF TEXAS AT AUSTIN W'M OCKET N0TROL lSt To78713-750-(512)471-1534or471-7721(jZE *87 JIN -9 A1O:26 June 1, 1987 WM RecorgFile WM Project / /WI Docket No. 13 Dr. Theodore J. Taylor Salt Repository Project Office )rLPDRt adI9 n _ __ ta_ . U. 3* Uepdriinent UT Energy Dii b.iO 110 North 25 Mile Avenue _ _______- Hereford, TX 79045 Reference: Contract No. DE-AC97-83WM466t M __ ______ Dear Dr. Taylor: Per a request from Susan Heston to Chris Lewis, the status of the open-file report entitled *Basin and Range-Age Reactiviation of Rocky Mountain Structures in the Texas Panhandle, (OF-WTWI-1986-3),m by R. Budnik, is as follows. Dr. Budnik left the Bureau in August, 1986. The manuscript was revised by Dr. Budnik to reflect comments from GSA reviewers and resubmitted to the Journal before DOE comments were received at the Bureau. The article was published in the February, 1987 issue of Geology. Please note the title of the article was changed, it is now entitled nLate Miocene Reactivation of Ancestral Rocky Mountain Structures in the Texas Panhandle: A Response to Basin and Range Extension." Three copies of the reprinted article are enclosed. Also, the above referenced article supersedes OF-WTWI-1986-3. If you have any questions, please do not hesitate to contact me. Sincerely, Asoc iat cto Associate Director DCR:CL:cl Enclosures cc: P. Archer (BPMD) S. Heston (SRPO) F. Brown C. Lewis T. Clareson (BPMD/GRC) J. Raney S. -
Article (PDF, 237
Workshop White Papers Sci. Dril., 18, 19–33, 2014 www.sci-dril.net/18/19/2014/ doi:10.5194/sd-18-19-2014 © Author(s) 2014. CC Attribution 3.0 License. Drilling to investigate processes in active tectonics and magmatism J. Shervais1, J. Evans1, V. Toy2, J. Kirkpatrick3, A. Clarke4, and J. Eichelberger5 1Utah State University, Logan, Utah 84322, USA 2University of Otago, P.O. Box 56, Dunedin 9054, New Zealand 3Colorado State University, Fort Collins, Colorado 80524, USA 4Arizona State University, Tempe, Arizona 85287, USA 5University of Alaska, Fairbanks, Fairbanks, Alaska 99775, USA Correspondence to: J. Shervais ([email protected]) Received: 7 January 2014 – Revised: 5 May 2014 – Accepted: 19 May 2014 – Published: 22 December 2014 Abstract. Coordinated drilling efforts are an important method to investigate active tectonics and magmatic processes related to faults and volcanoes. The US National Science Foundation (NSF) recently sponsored a series of workshops to define the nature of future continental drilling efforts. As part of this series, we convened a workshop to explore how continental scientific drilling can be used to better understand active tectonic and magmatic processes. The workshop, held in Park City, Utah, in May 2013, was attended by 41 investigators from seven countries. Participants were asked to define compelling scientific justifications for examining problems that can be addressed by coordinated programs of continental scientific drilling and related site investigations. They were also asked to evaluate a wide range of proposed drilling projects, based on white papers submitted prior to the workshop. Participants working on faults and fault zone processes highlighted two overarching topics with exciting po- tential for future scientific drilling research: (1) the seismic cycle and (2) the mechanics and architecture of fault zones. -
High-Silica Lava Morphology at Ocean Spreading Ridges: Machine-Learning Seafloor Classification at Alarcon Rise
Article High-Silica Lava Morphology at Ocean Spreading Ridges: Machine-Learning Seafloor Classification at Alarcon Rise Christina H. Maschmeyer 1,†, Scott M. White 1,*, Brian M. Dreyer 2 and David A. Clague 3 1 School of the Earth, Ocean and Environment, University of South Carolina, Columbia, SC 29208, USA; [email protected] 2 Institute of Marine Sciences, University of California, Santa Cruz, CA 95064, USA; [email protected] 3 Monterey Bay Aquarium Research Institute, Moss Landing, CA 95039, USA; [email protected] † Now at: Fugro USA Marine, Inc. Geoconsulting Exploration, 6100 Hillcroft Ave, Houston, TX 77081, USA * Correspondence: [email protected] Received 31 March 2019; Accepted 28 May 2019; Published: 1 June 2019 Abstract: The oceanic crust consists mostly of basalt, but more evolved compositions may be far more common than previously thought. To aid in distinguishing rhyolite from basaltic lava and help guide sampling and understand spatial distribution, we constructed a classifier using neural networks and fuzzy inference to recognize rhyolite from its lava morphology in sonar data. The Alarcon Rise is ideal to study the relationship between lava flow morphology and composition, because it exhibits a full range of lava compositions in a well‐mapped ocean ridge segment. This study shows that the most dramatic geomorphic threshold in submarine lava separates rhyolitic lava from lower‐silica compositions. Extremely viscous rhyolite erupts as jagged lobes and lava branches in submarine environments. An automated classification of sonar data is a useful first‐order tool to differentiate submarine rhyolite flows from widespread basalts, yielding insights into eruption, emplacement, and architecture of the ocean crust. -
The Plate Boundary Observatory
The Plate Boundary Observatory Results of the First Workshop on Geological Research Held at Pasadena, California May 22-25, 2001 Submitted by PBO Geology Committee Douglas Burbank Ken Hudnut (PBO Steering Committee) Rick Ryerson Charles Rubin PBO Geology White Paper/Page 1 David Schwartz (Chair) Brian Wernicke (PBO Steering Committee) Steve Wesnousky Introduction The diffuse plate boundary zone of the western US and Alaska consists of hundreds of active tectonic elements that collectively accommodate large-scale relative motions between the North American, Pacific and Juan de Fuca plates (Figure 1). The major plate-bounding structures include the San Andreas transform and the Alaskan and Cascadia subduction zones, which accommodate most of the relative plate motion. Each of these features is a system of faults, each of which either fails in repeated large earthquakes or creeps aseismically. In addition to these fault systems, areally extensive structural domains within the North American plate, such as the Basin and Range province, Rio Grande rift, Rocky Mountains and interior Alaska accommodate up to 30% of the relative plate motion (Figure 1). PBO Geology White Paper/Page 2 Figure 1. Tectonic setting of the Pacific-Juan de Fuca-North America plate boundary system, showing major fault systems and locations of proposed geodetic instrumentation. Courtesy of PBO Steering committee. The life-cycle of an individual fault zone lasts on the order of 1 to 10 Myr, and the repeat times of major earthquakes (durations of the seismic cycle) are on the order of hundreds to thousands of years or more. Hence any attempt to understand tectonic systems must include observations on these time scales.