Portable Broadband Seismology Jakarta, Indonesia May 11-13, 2006 Bruce Beaudoin Marcos Alvarez Part 3: Seismometer Overview

A Simple Seismometer

Equipment Inventory: Seismometers

Spectral Amplitude Response Characteristics

Equipment Inventory: Broadband Seismometers Guralp CMG-3T Streckeisen STS-2

Equipment Inventory: Intermediate Period Seismometers CMG-40T 30s active feedback CMG-ESP 30s active feedback

Equipment Inventory: Short Period Seismometers L4C 1Hz Teledyne GS-13 1Hz 1 Element/Housing L22 2Hz Passive Sensors

Streckeisen STS-2 Tri-Axial 120 Second Low Power 1500 V/m/s

Streckeisen STS-2

Transformation Equations East North Vertical

Transformation Equations

Guralp CMG-3T 120 Second Low Power 1500 V/m/s

Guralp CMT-3T

Guralp CMG-3ESP 30 Second Low Power 2000 V/m/s

Guralp CMG-40T 30 Second Low Power 800 V/m/s No locking