Nanoseismic Monitoring by Seismic Navigation System (SNS) M. Joswig Institut für Geophysik, Universität Stuttgart, Germany data logger 3-D 1-D.

Slides:

Advertisements

Similar presentations

Measuring Earthquakes

Advertisements

Presented by: Richard Wood. Goals and strategies Methods Performance evaluation Performance improvements Remaining Challenges.

Long RAnge Navigation version C

Chapter 2.  Seismic waves cause the seismograph’s drum to vibrate. But the suspended weight with the pen attached moves very little. Therefore, the pen.

Friday, March 23 nd 1 Attendance 2 Go over Review Sheet Test Pass Back papers.

Earth’s Dynamic Crust and Interior: small scale crustal changes  Movements of the crust is based on the concept of original horizontality. This concept.

What are Earthquakes? The shaking or trembling caused by the sudden release of energy Usually associated with faulting or breaking of rocks Continuing.

Nyeste erfaringer med processering af SkyTEM data Esben Auken GeoFysikSamarbejdet Geologisk Institut, Aarhus Universitet.

Iranian Broad-Band Seismic Network M. Mokhtari Director of National Center for Earthquake Prediction (IIEES) FSDN meeting Bangkok,

What are Earthquakes? The shaking or trembling caused by the sudden release of energy Usually associated with faulting or breaking of rocks Continuing.

This is. Jeopardy Earth Science Forces in Earth's Crust Earthquakes and Seismic Waves Monitoring Earthquakes Earthquake Safety Vocabulary Capture the.

Space Weather influence on satellite based navigation and precise positioning R. Warnant, S. Lejeune, M. Bavier Royal Observatory of Belgium Avenue Circulaire,

Reflection Field Methods

Locating the Epicenter

The Scenario: A large earthquake has happened. You need to find the earthquakes epicenter to send help. The process of epicenter location has been used.

Studying Earthquakes. Seismology: the study of earthquakes and seismic waves.

New Scientific Applications with Existing CGPS Capabilities Earthquakes, Soil Moisture, and Environmental Imaging Andria Bilich Geosciences Research Division.

L Braile, 12/28/2006 (revised 9/14/08) Interpreting Seismograms

Measuring CH 5 Prentice Hall p CH 5 Prentice Hall p Earthquakes.

Fundamentals of Operational Display – ½ day Magnetic Principles – ½ day Operational display and Search Patten Planning – ½ day Search Pattern Planning.

Seismic reflection Ali K. Abdel-Fattah Geology Dept.,

Infrasound detector for Apatity group Asming V.E., Kola Regional Seismological Center, Apatity, Russia.

Earthquakes Chapter 11 P. Lobosco

Cross-over Seismology : Blurring the line between passive and active source experiments Diego Quiros Cornell University.

Earthquakes On Shaky Ground. Earthquakes The shaking of the Earth’s surface Caused by faulting beneath the surface –Faults are when the rock splits and.

Quiz/Review Get out a small piece of paper and put your name on it.

Disaster Mitigation and Management Organization

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

Earthqu akes Earthquake Footage. Epicenter The point on Earth’s surface directly above where the energy is released in an earthquake. Focus = point where.

Data Types Entities and fields can be transformed to the other type Vectors compared to rasters.

Introduction to the Global Positioning System Introduction to the Global Positioning System GPS.

Do Now – In Notebooks 1.In what order do earthquake waves appear on a seismogram? 2.How many points are needed to determine the epicenter of an earthquake?

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

Earthquakes!!. Focus and Epicenter Focus – where the earthquake happens Epicenter – the spot on the surface above the focus.

Do Now – In Notebooks 1. What is an earthquake? 2. What kind of stress acts on a normal fault? Does the crust lengthen or shorten? 3. What is the difference.

Session III GPS DEPTH-FINDER UNITS. F GPS positions are not error free –User and/or Satellite clock bias. –Satellite signal can be blocked. –Atmospheric.

Legend for [SeismoZoom] and PhasePick in (Array Network Magnitude) Cursor above [seismogram] = set phase or beam window or Max Cursor above [empty left]

C5S3.  The Seismograph is a heavy weight attached to a frame by a spring or wire. A pen connected to the weight rests on its point on a drum that can.

Surface-wave Derived Focal Mechanisms in Mid-America R. B. Herrmann 1, C. J. Ammon 2 and H. M. Benz 3 1 Saint Louis University, 2 Pennsylvania State University,

Earthquake Let’s shake, rattle and roll Earthquake Basics Earthquake – shaking of Earth’s crust caused by the sudden release of energy Energy build over.

What are Earthquakes? The shaking or trembling caused by the sudden release of energy Usually associated with faulting or breaking of rocks Continuing.

Today Hand in your LAB and any other work. Hand in your LAB and any other work. Check the list in the back, if you owe something. Check the list in the.

Monitoring Earthquakes

How is an Earthquake’s Epicenter Located? Seismic wave behavior –P waves arrive first, then S waves, then L and R –Average speeds for all these waves is.

Data QC and filtering Bryce HutchinsonSumit Verma Objective: Consider the frequency range of different seismic features Look for low frequency and high.

Monitoring Earthquakes Chapter 2 Section 3 Objectives F Explain how a seismograph works. F Describe how Geologists monitor faults. F

Bellringer# 27 What is the Richter Scale? What is the greatest magnitude on the Richter scale? Where would an earthquake with the greatest magnitude be.

What are Earthquakes? The shaking or trembling caused by the sudden release of energy Usually associated with faulting or breaking of rocks Continuing.

Locating the Epicenter

What are Earthquakes? The shaking or trembling caused by the sudden release of energy Usually associated with faulting or breaking of rocks Continuing.

Turn to your new table of contents and correct the test date.

Uplift: Faults and Earthquakes

Earthquake Measurement 7-2

What are Earthquakes? The shaking or trembling caused by the sudden release of energy Usually associated with faulting or breaking of rocks Continuing.

10.2 Locating and Measuring Earthquakes

University of Fribourg – Department of Geosciences

Earthquakes Waves & Seismograms

4 min of arrival difference = 2,600 km

Earthquakes Chapter 19.

When does the P wave arrive? 08:08:00

What are Earthquakes? The shaking or trembling caused by the sudden release of energy Usually associated with faulting or breaking of rocks Continuing.

Lab Practical Review Day 2

So why are seismograms so important?

What are Earthquakes? The shaking or trembling caused by the sudden release of energy Usually associated with faulting or breaking of rocks Continuing.

Two M5 earthquakes in Corinth Gulf, January 2010

What are Earthquakes? The shaking or trembling caused by the sudden release of energy Usually associated with faulting or breaking of rocks Continuing.

Finding the Epicenter.

Interpreting Seismograms

Locating an Earthquake's

Presentation transcript:

Nanoseismic Monitoring by Seismic Navigation System (SNS) M. Joswig Institut für Geophysik, Universität Stuttgart, Germany data logger 3-D 1-D

Be Fast ! Site selection with initial noise survey worth to stay here ?

Be Fast ! Site selection with initial noise survey seismometerdata loggerWLAN field notebook with WLAN min after arrival sonogram, i.e. detectable signal energy noise variance power spectral density matrixnoise mean scaled, filtered seismogram

Be Flexible ! Array installation, survey of geometry okay, let‘s bring it up ! min after arrival

Be Flexible ! ~100m Z Z Z 3c Done min after arrival ! (Lat, Lon, h ) (x 1, y 1, h 1 ) (x 2, y 2, h 2 ) (x 3, y 3, h 3 ) Tripartite, Equilateral Array with 3-Comp Center Station

Details: WLAN, Data Logger, Breakout Box, Seismometers, Cable Drums

Details: Laser Distance Meter, GPS incl. Compass, Tilt Meter, Tripod

Be Independent ! Process events with just local means any results right now ?

Be Independent ! Process events with just local means one SNS gives you all - distance by t P - t S - direction by array beam - approx. depth and halfspace v P by hyperbola and incidence angle - magnitude by WA-simulation SNS

Be Sensitive ! Process events down to the ground noise how small is small ?

Be Sensitive !... too weak to process ? seismogram zoom window of 14 sec array 3comp map zoom map depth profile

Be Sensitive !... just a challenge to HypoLine ! adjust phases by sonogramsadapt layer model get depth get epicenter

increase depth hyperbola grow  circles shrink  Search Solution Space bv Variation of Hypolines

increase depth

? circles vanish!

? increase depth circles vanish!

optimum depth increase vP hyperbola grow  circles grow  spread increases

increase vP

optimum vP optimum depth minimum spread

Be Sensitive !... just a challenge to HypoLine ! confirm P beamconfirm S beam

Be Sensitive !... just a challenge to HypoLine ! get magnitude M l -2.1 in 1.4 km !... and the result is

Burete Fortuna3 Example: Monitoring Threshold and Noise Samples (20 sec, night time) Distance correction for M l Events per night:

Be Portable ! Access remote, quiet sites off any roads it‘s getting better...

... in fact, ultra-portable ! cable drums data logger WLAN seismometers GPS, laser dist meter field notebook tripod

...and finally, the team.