By Team Funky Beams (+ Chuck)

Slides:

Advertisements

Similar presentations

Processing and Binning Overview From chapter 14 “Elements of 3D Seismology” by Chris Liner.

Advertisements

Proton Beam Measurements in the Recycler Duncan Scott On Behalf of the Main Injector Group.

THE AUSTRALIAN NATIONAL UNIVERSITY Infrasound Technology Workshop, November 2007, Tokyo, Japan OPTIMUM ARRAY DESIGN FOR THE DETECTION OF DISTANT.

Rethinking Array Seismology in Nuclear-Test-Ban Treaty Monitoring Steven J. Gibbons Workshop on Arrays in Global Seismology, Raleigh, North Carolina, May.

Capstone Project By Samer Al-khateeb Date: May/10/2013.

Emittance Measurement Simulations in the ATF Extraction Line Anthony Scarfe The Cockcroft Institute.

Synthetic Study of Azimuthal AVO Analysis with Anisotropic Spreading Correction Ellen (Xiaoxia) & Ilya.

TEC and its Uncertainty Ludger Scherliess Center for Atmospheric and Space Sciences Utah State University GEM Mini-Workshop San Francisco December 2014.

What is a wave? Speed, wave length and frequency.

UNIVERSITY OF ATHENS Faculty of Geology and Geoenvironment Department of Geophysics and Geothermics A. Agalos (1), P. Papadimitriou (1), K. Makropoulos.

Spectra: ApplicationsComputational Geophysics and Data Analysis 1 Fourier Transform: Applications in seismology Estimation of spectra –windowing –resampling.

Focal Mechanism Solutions

Earthquake Focal Mechanisms

Sine Waves. Notation s 0 … s n … s N or s(0), … s(n), … s(N) Sketch the following digital signals: δ (n) = 1, n = 0 = 0, otherwise u (n) = 1, n >= 0 =

Geology 6600/7600 Signal Analysis 03 Dec 2013 © A.R. Lowry 2013 Last time: Deconvolution in Flexural Isostasy Surface loads can be solved from observed.

A wave is a single vibratory disturbance of energy as it propagates through a medium. A pulse is a single disturbance. A pulse on a rope. This is an example.

High Sensitivity Magnetic Gradiometer for Earthquake Research Applications ISRAEL 2005 Ivan Hrvoic H. Ginzburg, H. Zafrir, G. Steinitz, B. Shirman, G.

Teleseismic Location find direction of signals based on Array algorithms backtrace ray paths through the earth simplifications: flat earth, plane waves.

Crust and upper mantle structure of Tien Shan Orogen and its surroundings by ambient noise tomography and earthquake tomography Yong Zheng a, Yingjie Yang.

RESOLVING FOCAL DEPTH WITH A NEAR FIELD SINGLE STATION IN SPARSE SEISMIC NETWORK Sidao Ni, State Key Laboratory of Geodesy and Earth’s Dynamics, Institute.

An array analysis of seismic surface waves

Development of Airborne Potassium Magnetometer Dr. Ivan Hrvoic, Ph.D., P.Eng. President, GEM Advanced Magnetometers Exploration 2007 & KEGS.

Surface waves Earthquakes generate both body waves (P, S) and surface waves Surface waves are generated along any free surface in the medium In the Earth,

Beginning search for deep moonquakes locations on the lunar far side T. Sonnemann 1, 2, M. Knapmeyer 1 and J. Oberst 1 1 Institute of Planetary Research,

Observation of diffuse seismic waves at teleseismic distances

High Resolution Finite Fault Inversions for M>4.8 Earthquakes in the 2012 Brawley Swarm Shengji Wei Acknowledgement Don Helmberger (Caltech) Rob Graves.

Seismic Arrays presented at the WORKSHOP High Quality Seismic Stations and Networks for Small Budgets Volcan, Panama March 2004by Jens Havskov, Department.

An Assessment of the High-Gain Streckheisen STS2 Seismometer for Routine Earthquake Monitoring in the US ISSUE: Is the high-gain STS2 too sensitive to.

IRIS Summer Intern Training Course Wednesday, May 31, 2006 Anne Sheehan Lecture 3: Teleseismic Receiver functions Teleseisms Earth response, convolution.

BEPCII Transverse Feedback System Yue Junhui Beam Instrumentation Group IHEP ， Beijing.

HIGH FREQUENCY GROUND MOTION SCALING IN THE YUNNAN REGION W. Winston Chan, Multimax, Inc., Largo, MD W. Winston Chan, Multimax, Inc., Largo, MD Robert.

Multisource Least-squares Migration of Marine Data Xin Wang & Gerard Schuster Nov 7, 2012.

Kinematic processing with track Tutorial 03 and 04 Thomas Herring

Background 2 Outline 3 Scopus publications 4 Goal and a signal model 5Harmonic signal parameters estimation.

P wave amplitudes in 3D Earth Guust Nolet, Caryl Michaelson, Ileana Tibuleac, Ivan Koulakov, Princeton University.

Small-aperture seismic arrays: instruments and detectability Jiří Málek, Milan Brož and Jaroslav Štrunc Institute of Rock Structure and Mechanics AS CR,

Exercise.04 Receiver functions will be determined Receiver functions will be inverted Receiver functions and surface-wave dispersion will be inverted jointly.

S. Bettoni, R. Corsini, A. Vivoli (CERN) CLIC drive beam injector design.

Seismology Dylan Mikesell April 5, 2011 Boise State University.

Exercise.06 Unpack a SEED volume Remove the instrument response Pick P arrivals Local event Unpack again using location so that components can be rotated.

Lee M. Liberty Research Professor Boise State University.

Midterm Review 28-29/05/2015 Progress on wire-based accelerating structure alignment Natalia Galindo Munoz RF-structure development meeting 13/04/2016.

Mechanical strain measurements on MQXFS1 Magnet using CERN system M.Guinchard and P.Grosclaude European Organization for Nuclear Research (CERN) 27 April,

Teleseismic Location find direction of signals based on Array algorithms backtrace ray paths through the earth simplifications: flat earth, plane waves.

Site effect characterization of the Ulaanbaatar basin

Ho Jung Paik University of Maryland GW Astronomy, Korea August, 2016

3D Array Processing Sept 8, 2016, DUGL telecon

Susan L. Beck George Zandt Kevin M. Ward Jonathan R. Delph.

Date of download: 10/19/2017 Copyright © ASME. All rights reserved.

ET: micro-earthquakes and seismic noise

Improved radio data analysis with LOPES Katrin Link, for the LOPES Collaboration #0404, ICRC 2011, Beijing.

Requesting a Standardized Data Set for the FDSN Network

TUTORIAL 3 BEAMFORMING 9/15/2018 LECTURES 1.

Time domain & frequency domain

EE608 Adaptive Signal Processing Course Project Adaptive Beamforming For Mobile Communication Group: 1 Chirag Pujara ( ) Prakshep Mehta.

1-D Mississippi embayment sediment velocity structure and anisotropy: constraint from ambient noise analysis on a dense array Chunyu,Liu1; Charles A. Langston1.

Université Joseph Fourier Grenoble, France

Introduction to Shear Wave Splitting

Douglas Dreger, Gabriel Hurtado, and Anil Chopra

Douglas Dreger, Gabriel Hurtado, and Anil Chopra

Component: E Local quakes Broad frequency Two tremor bursts

Saturday 7th May Sat – Sun night

Use x,y,z for ease of intuition.

Review of Coherent Noise Suppression Methods

Two M5 earthquakes in Corinth Gulf, January 2010

Uses of filters To remove unwanted components in a signal

Processing and Binning Overview

Ken Creager, Wendy McClausland and Steve Malone

Infrasound Case Studies

Wave Equation Dispersion Inversion of Guided P-Waves (WDG)

Presentation transcript:

By Team Funky Beams (+ Chuck) The Ideal Array By Team Funky Beams (+ Chuck)

Preprocessing courtesy of Chuck Download and unpack seed file Create and populate event directories with synchronized time windows of event sacs Remove instrument response Rotate ENZ to RTZ Preprocessing courtesy of Chuck

Select subset of OK array of interest For the Z and T components For the gradiometer and the golay array For each array and frequency Determine array response For P and S waves Gradiometry analysis Compute Beamforming

Array Geometries and Co-Arrays

What is Beamforming? Rost & Thomas, 2002 5 stations array Signals: time arrival (geometry,slowness) Plane wave Signals shifted with the phase slowness Stack Beamforming

Array Response Comparison (0.5-4 Hz) Golay Grad H Cross

Array Response Comparison (1-12 Hz) Golay Grad H Cross

Array Response Comparison (10-20 Hz) Golay Grad H Cross

Earthquake within Fairview cluster 2016-07-08 22:29:38 (UTC) 98 km from OK array M 4.2

Beamforming - P wave Golay 0.51-25 Hz Golay 0.96-4.18 Hz

Beamforming - S wave Golay 0.51-25 Hz Golay 0.96-4.18 Hz

Beamforming Comparison 0.51-33.30 Hz 0.96- 4.18 Hz 1.00-12.00 Hz 2.00-62.00 Hz 8.40-62.50 Hz P-wave S-wave

Line array

What is Gradiometry?

geometrical spreading What is Gradiometry? geometrical spreading horizontal slowness

gradient of displacement What is Gradiometry? gradient of displacement

numerically calculate numerically calculate What is Gradiometry? numerically calculate numerically calculate measure invert

Gradiometry (Vertical) - Golay Array Filtered 0.05-0.1 Hz u(t) Azimuth Mean = 78.4019 Slowness Mean = 0.21868 Geo. Spr. Rad. Patt.

Gradiometry (Transverse) - Golay Array Filtered 0.05-0.2 Hz u(t) Azimuth Mean = 82.14 Slowness Mean = 0.2685 Geo. Spr. Rad. Patt.

Gradiometry (Vertical) - Gradiometer Filtered 2-3 Hz u(t) Mean = 86.945 Azimuth Slowness Mean = 0.165 Geo. Spr. Rad. Patt.

Gradiometry (Transverse) - Gradiometer Filtered 2-3 Hz u(t) Mean = 75.2917 Azimuth Mean = 0.16313 Slowness Geo. Spr. Rad. Patt.

Thank you / merci beaucoup Conclusions Aperture is an important control over the resolution Golay array is efficient for beamforming Station spacing heavily influences aliasing Gradiometry is more influenced by station spacing Thank you / merci beaucoup Chuck, IRIS, et al.!!!

Fin