Presentation is loading. Please wait.

Presentation is loading. Please wait.

By Team Funky Beams (+ Chuck)

Published byLetitia Warner Modified over 5 years ago

Similar presentations

Presentation on theme: "By Team Funky Beams (+ Chuck)"— Presentation transcript:

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

2 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

3 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

4 Array Geometries and Co-Arrays

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

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

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

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

9 Earthquake within Fairview cluster
:29:38 (UTC) 98 km from OK array M 4.2

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

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

12 Beamforming Comparison
Hz Hz Hz Hz Hz P-wave S-wave

13 Line array

14 What is Gradiometry?

15 geometrical spreading
What is Gradiometry? geometrical spreading horizontal slowness

16 gradient of displacement
What is Gradiometry? gradient of displacement

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

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

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

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

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

22 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.!!!

23 Fin

Download ppt "By Team Funky Beams (+ Chuck)"

Similar presentations

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

Processing and Binning Overview From chapter 14 “Elements of 3D Seismology” by Chris Liner.
Proton Beam Measurements in the Recycler Duncan Scott On Behalf of the Main Injector Group.

Proton Beam Measurements in the Recycler Duncan Scott On Behalf of the Main Injector Group.
THE AUSTRALIAN NATIONAL UNIVERSITY Infrasound Technology Workshop, 13-16 November 2007, Tokyo, Japan OPTIMUM ARRAY DESIGN FOR THE DETECTION OF DISTANT.

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.

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.

Capstone Project By Samer Al-khateeb Date: May/10/2013.
Emittance Measurement Simulations in the ATF Extraction Line Anthony Scarfe The Cockcroft Institute.

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.

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.

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.

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.

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.

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

Focal Mechanism Solutions
Earthquake Focal Mechanisms

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 =

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.

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.

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.

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.

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.

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.

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.

Similar presentations

Ads by Google