Download Volume II Accomplisments (28 Mb pdf). - IRIS

More documents

Recommendations

Info

$Refraction - IRIS$

New DMC Data Product: Standardized Event Information Plots Generated in Near Real Time for All M>5.5 Earthquakes DMC Products Group (IRIS DMC) As part of the extended product development effort at the IRIS DMC, we have begun to produce a suite of plots automatically generated in near real-time following all M>5.5 earthquakes. Plots will include record sections, vespagrams, time-distance envelope stacks, time-azimuth envelope stacks, station maps with signal-to-noise ratio and peak amplitudes indicated, phase centered record sections and various source-time function estimates. Depending on the plot type, plots will be generated using various data sets (all IRIS broadband data, USArray, southern California, Pacic Northwest Seismic Network...) in different frequency bands and for vertical, radial and transverse components. The plots will be available by plot type through our searchable product archive as well as on event-based webpages. These standardized plots will allow users to quickly scan data quality for seismic phases of interest or analyze many various features of earthquakes such as rupture duration and direction, coda duration, and complexity (impulsive vs emergent or single event vs doublet). Acknowledgements: Product development within the IRIS DMS is supported by the NSF grants #EAR-0552316 and EAR-0733069. 2010/02/27 Chile M8.8 USArray Transportable Array displacement Vertical Northward rupture direction Approx. rupture duration S P R1 R2 R3 R4 S L1 L2 L3 L4 L5 The long aperture and station densit of USArray allow for spectacular record sections such as these from the Feb, 2010 M8.8 Chile earthquake. Long period record sections are routinely generated for all large earthquakes (top) as well as nonlinear versions (bottom), which enhance the coherence of later major and weak arrivals. The bottom panels show clear Rayleigh and Love wave multiples. Short period envelopes of data between 30-95 degrees distance are stacked in azimuthal bins. Quick looks at these plots can identify source features such as rupture duration, direction and complexity. II-44 | 2010 IRIS Core Programs Proposal | Volume II | education and outreach
FuncLab: A MATLAB Interactive Toolbox for Handling Receiver Function Datasets Kevin C. Eagar (School of Earth and Space Exploration, Arizona State University), Matthew J. Fouch (School of Earth and Space Exploration, Arizona State University) We developed FuncLab, a new MATLAB graphical user interface (GUI) toolbox, for the management and analysis of teleseismic receiver functions. The ability to import and manage potentially large receiver function datasets within the MATLAB environment independent of the method of receiver function computation is the foundation of FuncLab. Additional modules for commonly employed processing and analysis methods, such as common conversion point and Hκ stacking, are built around the FuncLab management system. We also provide a framework for the development of future modules that implement alternative analysis methods. Users start by importing data in SAC format and creating an independent project with a formal directory structure, setup by FuncLab. Metadata, such as station and event information, for each record are stored in arrays housed within a MAT-file in the project directory. To handle large datasets and allow faster processing, FuncLab does not store receiver function or seismogram time series data in MAT-files, but rather selectively reads this data only during analysis or visualization processes. Through user-friendly GUIs, information and visualizations of each record are easily accessible. One of the key strengths of FuncLab is its ability to facilitate the always time-consuming pre-processing step of data selection, or trace editing, through visualization of many records at a time. Other processing, preference setting, and data export are also handled by GUIs, providing a combination of customization for experienced researchers and intuitive guidance for beginners. The IRIS Data Management Center is currently developing a conduit to provide receiver functions generated from the EarthScope Automated Receiver Survey (EARS) into a format that can be directly imported into FuncLab. FuncLab will be released to the community in late summer 2010. References Eagar, K.C. and M.J. Fouch, FuncLab: A MATLAB interactive toolbox for handling receiver function datasets, to be submitted to Computers and Geosciences, August 2010. Acknowledgements: We would like to thank Rick Aster and Gary Pavlis for organizing extremely helpful MATLAB tutorials on receiver functions for the IRIS/Earthscope Imaging Science Workshop at Washington University in 2006 that first inspired KCE to deal with this problem in MATLAB. We would also like to thank Mike Thorne for his original SACLAB codes (http://web.utah.edu/thorne/software.html) for importing SAC files into MATLAB, much of which was modified for use with FuncLab. Thanks also to Manoch Bahavar and Chad Trabant of the IRIS Data Management Center and Philip Crotwell for extensive work in providing data products from the EARS project to be directly compatible with the new FuncLab MATLAB toolbox. This research was supported by National Science Foundation award EAR- 0548288 (MJF EarthScope CAREER grant). Screenshot of main FuncLab GUI. Items under the File, Editing, View, and Addons menus may be accessed from this screen. Top-left drop-down box lists the types of “tables” used to organize receiver function records. Tables are listed in the left panel. Records in the selected table (highlighted in left panel) are listed in the center panel. Metadata for the selected record (highlighted in center panel) are shown in the right panel. Information about number of tables, records, and active records are listed below the left and center panels, respectively. Text displayed at the bottom is used to convey short messages to the user about ongoing or finished processes. Screenshot of receiver function Trace Editing GUI. Wiggle traces of records in a selected table are displayed with blue (or red, not shown) fill denoting positive amplitudes and dark gray fill denoting negative amplitudes. Check boxes above waveforms allow the user to change the record status to “on” (checked) or “off” (unchecked). Unchecked records also shaded light gray. Scrollbar at the bottom allows the user to scan through all records listed in the table. 2010 IRIS Core Programs Proposal | Volume II | education and outreach | II-45
Page 1 and 2:
volume ii - accomplishments Facilit
Page 3 and 4:
volume ii - accomplishments Facilit
Page 5 and 6: CONTENTS Introduction..............
Page 7 and 8: Non-Volcanic Tremor along the Oaxac
Page 9 and 10: Detecting the Limit of Slab Break-o
Page 11: Lower Mantle, Core-Mantle Boundary
Page 14 and 15: • Non-Earthquake Seismic Sources
Page 16 and 17: acoustics community by permitting a
Page 18 and 19: Near-Surface Environments - Hazards
Page 20 and 21: Why Do Faults Slip? Emily Brodsky (
Page 22 and 23: Another probe of fault evolution is
Page 24 and 25: to provide a best match with the Gl
Page 26 and 27: tectonic disruption and mass accumu
Page 28 and 29: W3 ∆ 5 . A number of intriguing r
Page 30 and 31: thermal and compositional effects r
Page 33 and 34: Towards a Global School Seismic Net
Page 35 and 36: On-Line Seismology Curriculum for U
Page 37 and 38: Teachers on the Leading Edge: Earth
Page 39 and 40: USArray Education and Outreach in S
Page 41 and 42: From an IRIS Lecture Tour to a Gene
Page 43 and 44: Explorer Series Robert Bartolotta (
Page 45 and 46: Workshop “Earth System Science fo
Page 47 and 48: The IRIS Internship Cycle: From Int
Page 49 and 50: Community-Outreach Efforts in Data
Page 51 and 52: Site Reconnaissance for Earthscope
Page 53 and 54: jAmaseis: Seismology Software Meeti
Page 55: Near Real-Time Simulations of Globa
Page 59 and 60: Five Years of Distributing the Seis
Page 61 and 62: IRIS DMS Data Products, Beyond Raw
Page 63 and 64: Local Earthquakes in the Dallas-Ft.
Page 65 and 66: Epicentral Location Based on Raylei
Page 67 and 68: Analysis of Spatial and Temporal Se
Page 69 and 70: Exceptional Ground Motions from the
Page 71 and 72: The 2010 Mw7.2 El Mayor-Cucapah Ear
Page 73 and 74: Effects of Kinematic Constraints on
Page 75 and 76: Imaging of the Source Properties of
Page 77 and 78: Teleseismic Inversion for Rupture P
Page 79 and 80: The Global Aftershocks of the 2004
Page 81 and 82: The 17 July 2006 Java Tsunami Earth
Page 83 and 84: Seismic Cycles on Oceanic Transform
Page 85 and 86: Migration of Early Aftershocks Foll
Page 87 and 88: Apparent Stress Variations at the O
Page 89 and 90: Automated Identification of Telesei
Page 91 and 92: Evaluating Ground Motion Prediction
Page 93 and 94: Tremor Monitoring Aaron Wech (Unive
Page 95 and 96: Slow Slip and Tremor in the Norther
Page 97 and 98: 0 0.5 1 1.5 2 2.5 3 0 0.5 1 1.5 2 2
Page 99 and 100: Intimate Details of Tremor Observed
Page 101 and 102: Global Search of Triggered Tremor a
Page 103 and 104: Slab Morphology in the Cascadia For
Page 105 and 106: Source Analysis of the Memorial Day
Page 107 and 108:
Iceberg Tremor and Ocean Signals Ob
Page 109 and 110:
Elucidating the Stick-Slip Nature o
Page 111 and 112:
Probing the Atmosphere and Atmosphe
Page 113 and 114:
Volcanic Plume Height Measured by S
Page 115 and 116:
Eruption Dynamics at Mount St. Hele
Page 117 and 118:
A Search for the Lunar Core Using A
Page 119 and 120:
Seismic Imaging of the Mt. Rose Fau
Page 121 and 122:
Structure of the California Coast R
Page 123 and 124:
Temporal Variations in Crustal Scat
Page 125 and 126:
High-Resolution Locations of Trigge
Page 127 and 128:
Adjoint Tomography of the Southern
Page 129 and 130:
Crustal Structure of the High Lava
Page 131 and 132:
Controlled Source Seismic Experimen
Page 133 and 134:
Structural Interpretations Based on
Page 135 and 136:
Optimized Velocities and Prestack D
Page 137 and 138:
40 Crustal Structure beneath the Hi
Page 139 and 140:
Controlled-Source Seismic Investiga
Page 141 and 142:
Northward Thinning of Tibetan Crust
Page 143 and 144:
An Integrated Analysis of an Ancien
Page 145 and 146:
Crustal Velocity Structure of Turke
Page 147 and 148:
Ambient Noise Tomography of the Pam
Page 149 and 150:
Ambient Noise Monitoring of Seismic
Page 151 and 152:
Mushy Magma beneath Yellowstone Ris
Page 153 and 154:
Imaging the Seattle Basin to Improv
Page 155 and 156:
Developing a Database of ENA Ground
Page 157 and 158:
Lithospheric Layering in the North
Page 159 and 160:
eflective zones on depthmigrated se
Page 161 and 162:
FischerFig05.pdf 1 2/8/10 12:31 PM
Page 163 and 164:
S-Velocity Structure of Cratons, fr
Page 165 and 166:
Seismic Structure of the Crust and
Page 167 and 168:
Subducted Oceanic Asthenosphere and
Page 169 and 170:
Detecting the Limit of Slab Break-o
Page 171 and 172:
Pn Tomography of the Western United
Page 173 and 174:
3-D Isotropic Shear Velocity Model
Page 175 and 176:
Seismic Anisotropy Associated with
Page 177 and 178:
Anisotropy in the Great Basin from
Page 179 and 180:
Source-Side Shear Wave Splitting an
Page 181 and 182:
S-Velocity Structure of the Upper M
Page 183 and 184:
Velocity Structure of the Western U
Page 185 and 186:
Segmented African Lithosphere benea
Page 187 and 188:
Imaging the Mantle Wedge in the Cen
Page 189 and 190:
A Slab Remnant beneath the Gulf of
Page 191 and 192:
Imaging the Southern Alaska Subduct
Page 193 and 194:
Opposing Slabs under Northern South
Page 195 and 196:
Effect of Prior Petrological Constr
Page 197 and 198:
Global Azimuthal Seismic Anisotropy
Page 199 and 200:
The Stratification of Seismic Azimu
Page 201 and 202:
Upper Mantle Anisotropy beneath the
Page 203 and 204:
The Teleseismic Signature of Fossil
Page 205 and 206:
Seismic Anisotropy under Central Al
Page 207 and 208:
Stress-Induced Upper Crustal Anisot
Page 209 and 210:
Tau-p Depropagation of Five Regiona
Page 211 and 212:
Mapping the Upper Mantle with the S
Page 213 and 214:
Upper Mantle Structure of Southern
Page 215 and 216:
The Africa-Europe Plate Boundary in
Page 217 and 218:
The Isabella Anomaly Imaged by Eart
Page 219 and 220:
Tomographic Image of the Crust and
Page 221 and 222:
Small-Scale Mantle Heterogeneity an
Page 223 and 224:
Mantle Heterogeneity West and East
Page 225 and 226:
New Geophysical Insight into the Or
Page 227 and 228:
The Plume-slab Interaction beneath
Page 229 and 230:
Imaging the Shear Wave Velocity "Pl
Page 231 and 232:
Slab Fragmentation and Edge Flow: I
Page 233 and 234:
Mantle Shear-Wave Velocity Structur
Page 235 and 236:
Discordant Contrasts of P- and S-Wa
Page 237 and 238:
Upper Mantle Discontinuity Topograp
Page 239 and 240:
Edge-Driven Convection beneath the
Page 241 and 242:
Imaging Attenuation in the Upper Ma
Page 243 and 244:
Three-Dimensional Electrical Conduc
Page 245 and 246:
Core-Mantle Boundary Heat Flow Thor
Page 247 and 248:
Constraints on Lowermost Mantle Ani
Page 249 and 250:
Localized Double-Array Stacking Ana
Page 251 and 252:
Waveform Modeling of D" Discontinui
Page 253 and 254:
Absence of Ultra-Low Velocity Zones
Page 255 and 256:
Moving Seismic Tomography Beyond Fa
Page 257 and 258:
A Three-Dimensional Radially Anisot
Page 259 and 260:
The Importance of Crustal Correctio
Page 261 and 262:
Slabs Do Not Go Gentle Karin Sigloc
Page 263 and 264:
Localized Temporal Change of the Ea
Page 265 and 266:
Core Structure Reexamined Using New
Page 267 and 268:
Large Variations in Travel Times of
Page 269 and 270:
Observations of Antipodal PKIIKP Wa
Page 271 and 272:
Regional Variation of Inner Core An
Page 273:
Wide-Scale Detection of Earthquake
show all

Download Volume II Accomplisments (28 Mb pdf). - IRIS

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?