Project IDA (International Deployment of Accelerometers) Project IDA Measuring Seismic Noise IRIS Metadata Workshop January 12, 2012 Peter Davis Project.

Slides:

Advertisements

Similar presentations

Long-term monitoring of the STS-2 self-noise

Advertisements

INWAVE: THE INFRAGRAVITY WAVE DRIVER OF THE COAWST SYSTEM

ASL QC Procedures Status and plans. GSN ANSS Traditional Waveform Review  The “morning run” Daily summarizes problems with availability, timing,

Development of an In-Situ Test for Direct Evaluation of the Liquefaction Resistance of Soils K. H. Stokoe, II, E. M. Rathje and B.R. Cox University of.

AN INERTIAL ROTATION METER (TILTMETER) Hutt, C. R., Holcomb, L. G., and Sandoval, L. D. USGS Albuquerque Seismological Laboratory Surface tilt noise has.

March 25, 2002EarthScope CSIT Workshop Data Archiving and IT Issues for PBO Douglas Neuhauser UC Berkeley Seismological Lab Northern California Earthquake.

Fourier series With coefficients:. Complex Fourier series Fourier transform (transforms series from time to frequency domain) Discrete Fourier transform.

Tsunami Use Case Tsunami modelling and early warning systems for near source areas (Mediterranean, Juan de Fuca) -> mutual need for tsunami event field.

SUPERSITES COORDINATION WORKSHOP Monday 10 June 2013

Extending the North Atlantic Hurricane Record Using Seismic Noise Department of Earth and Planetary Sciences Northwestern University American Geophysical.

Acoustic Remote Sensing of Large- Scale Temperature Variability in the North Pacific Ocean Peter F. Worcester, Bruce D. Cornuelle, Matthew A. Dzieciuch,

Sri Lanka Earthquake & Tsunami Warning Training Program Session III.3 Global and Local Arrays May 10, 2006 Jakarta, Indonesia.

Laser-interferometer application to broadband observations Akito ARAYA (Earthquake Reseach Inst., Univ. of Tokyo, Japan) Broadband observation …. requires.

Where does background noise in the ocean come from? ORE 654 Guest Lecture Fred Duennebier October 21, 2011.

-for saving innocent lives

Effects of the cryogenics operational conditions on the mechanical stability of the FLASH linac modules Ramila Amirikas, Alessandro Bertolini, Jürgen Eschke,

NEPTUNE Transforming ocean science OCEAN NETWORKS CANADA EXPLORATION∙INNOVATION∙ACTION For a Changing Planet A University of Victoria Initiative Seismic.

Vibrationdata 1 Unit 19 Digital Filtering (plus some seismology)

Yuji Otake, Akito Araya and Kazuo Hidano

Sri Lanka Earthquake & Tsunami Warning Training Program Session III.3 Global and Local Arrays April 5, 2006 CETRAC, Sri Lanka.

Project IDA (International Deployment of Accelerometers) Project IDA Station Installation Issues and Techniques IRIS Metadata Workshop August 13, 2010.

A U.S. Sponsored Observing System of the Global Earth Observing System of Systems  Focus on the Network –Data Management –Products Global Seismographic.

Ambient ground motion and gravity gradient noise Jo van den Brand, Nikhef, Amsterdam on behalf of the design study team Einstein Telescope site selection.

Project IDA (International Deployment of Accelerometers) Project IDA Project IDA: Managing Seismic Data on a Global Scale GEOSS Seismic Workshop August.

LP Sensors3/24/041 Sensors Developed in the US for Low Frequency Seismology W. E. Farrell Science Applications International Corp.

A New QUACK Controlet: Sesimic Noise Probability Density Functions Developers: Dan McNamara, Ray Buland, Harold Bolton, Jerry USGS Richard Boaz.

SEA WAVES AND LONG PERIOD VERTICAL SEISMOMETERS

Higher-Level Clients to Leverage MUSTANG Metrics Dr. Mary Templeton IRIS Data Management Center Managing Data from Seismic Networks September

PBO Strainmeter Products Strainmeter Short Course Earthscope Meeting May 12, 2009 Strainmeter Short Course Earthscope Meeting May 12, 2009.

Ground shaking storms Martin Heesemann Earl Davis Steven Mihaly Richard Thomson NEPTUNE Science DMAS TEAM.

Managing Waveform Data and Metadata for Seismic Networks Foz do Iguaçu, Brazil August 2010 Hosted by University of Sao Paulo and University of San.

IRIS Broad-Band Instrumentation Workshop; Lake Tahoe, Mar 24-26, 2004 Gabi Laske Cecil H. and Ida M. Green Institute of Geophysics and Planetary Physics.

Starter 1.What are hurricanes in the Western Pacific called? 2.What are hurricanes in the Indian Ocean called?

Chapters: 3and 4. THREE MAIN LIGHT MATTER INTERRACTION Absorption: converts radiative energy into internal energy Emission: converts internal energy into.

Project IDA (International Deployment of Accelerometers) Project IDA II GSN Calibration Procedures November 16, 2011 Peter Davis Project IDA Scripps Institution.

§ 4.1 Instrumentation and Measurement Systems § 4.2 Dynamic Measurement and Calibration § 4.3 Data Preparation and Analysis § 4.4 Practical Considerations.

Introduction to Deconvolution

What are they? What do they do?

RD Instruments Home of the ADCP Coastal & Inland Business Unit 1. Why Waves? 2. Waves Features 3. Waves Observed.

Capturing the “hum” of the Earth on low frequency seismic arrays Barbara Romanowicz Univ of California, Berkeley in collaboration with: Junkee Rhie.

Infrasounds and Background Free Oscillations Naoki Kobayashi [1] T. Kusumi and N. Suda [2] [1] Tokyo Tech [2] Hiroshima Univ.

Proposal to site a seismic station on Diego Garcia Peter Davis Project IDA Scripps Institution of Oceanography University of California, San Diego.

1 HPEC'02 Distributed Data Management Architecture for Embedded Computing The Problem: –Integrated real-time management of large, distributed, heterogeneous.

An overview of Uganda Seismological Network and current activities

Seismograph Networks in Japan

Global and Local Arrays. Topics covered:  Types of seismic arrays  How arrays are used  Example global networks.

Harmonics. Strings as Harmonic Oscillators Its mass gives it inertia Its mass gives it inertia Its tension and curvature give it a restoring force Its.

Milton Garces, Claus Hetzer, and Mark Willis University of Hawaii, Manoa Source modeling of microbarom signals generated by nonlinear ocean surface wave.

The Seismic Spectrum Jonathan Berger Institute of Geophysics and Planetary Physics Scripps Institution of Oceanography University of California San Diego.

FCI. Faculty of Computer and Information Fayoum University FCI.

The Waves An Introduction to the World’s Oceans Sverdrup et al. - Chapter Ten - 8th Ed.

Acoustic Superposition and Spectral Analysis Scripps Classroom Connection.

1 SITE RESPONSE ANALYSIS USING MICROTREMORS Boğaziçi University Kandilli observatory and Earthquake Research Institute Department of Geophysics Korhan.

Nanometrics Broadband Seismic Sensor Workshop 24 March 2004 Neil Spriggs.

Fourier series With coefficients:.

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

Section 6: Noise of a dynamical scatterer

Frequency dependent microseismic sources

COASTAL DATA INFORMATION PROGRAM present

Chiangmai Seismic Station,Thailand (CHTO)

Filtering Geophysical Data: Be careful!

Applied Power Spectrum

University of Arizona, Dept. of Physics

Université Joseph Fourier Grenoble, France

Distributed Data Management Architecture for Embedded Computing

Requirements, needs, wants:

Associate Professor (Lecturer)

Weather Analysis.

ET Site evaluation WG2 group status report June 13, 2019.

Presentation transcript:

Project IDA (International Deployment of Accelerometers) Project IDA Measuring Seismic Noise IRIS Metadata Workshop January 12, 2012 Peter Davis Project IDA Scripps Institution of Oceanography University of California, San Diego

Calculating background noise: Remove mean and trend of time series

Calculating background noise: Remove mean and trend of time series Apply a taper to reduce spectral leakage

Types of data tapers (windows): Hanning Hamming Bartlett …

Calculating background noise: Remove mean and trend of time series Apply a taper to reduce spectral leakage Compute the Fourier transform

Calculating background noise: Remove mean and trend of time series Apply a taper to reduce spectral leakage Compute the Fourier transform Remove the instrument response

Observations from 2002

Ocean waves -> Rayleigh waves

Dominant period – 20 seconds Conversion at coast to Rayleigh- type motion Ocean waves -> Rayleigh waves (Hasselmann, 1963)

Ocean waves -> P-waves

Opposing wave motion (Longuet-Higgins, 1952): Interaction of standing waves with ocean bottom reflection from a coast wake of a moving storm center of a storm (Haubrich and McCamy, 1969)

Temperature variations

Temperature effects: Beyond 250 seconds period, temperature becomes very important Temperature dependence varies with the model of seismometer Temperature changes of 1e -6 o C are important Foam thermal insulation at GSN station in the UAE

Effect of changes in barometric pressure: buoyancy of the seismometer mass Newtonian attraction of air mass

STS1 placed under vacuum at GSN station SUR Vacuum lost!

(Zuern and Widmer, 1995) Barometer data used to remove effect of air pressure changes in seismic data:

Effect of changes in barometric pressure: buoyancy of the seismometer mass Newtonian attraction of air mass loading effect of air mass

Change of air pressure in a cavity Symmetric Case

Change of air pressure in a cavity Asymmetric Case

(Sorrels, 1971) KS borehole seismometer installed at WRAB GSN station

Continuous free oscillations

(Nishida and Kobayashi, 1999)

Human-induced noise

Examples of human-induced noise: Car and truck traffic Repeating machinery (pumps, generators)

Frequency bands most effected by installation:

IRIS DMC provides tools to analyze data

Thank you!