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Here are some of the articles that have been recently posted to the PASSCAL website:

Multi-Channel Dataloggers

PASSCAL has been upgrading its pool of Multi-Channel Dataloggers in recent years to include multiple ES-3000 Geodes and a 60 Channel Strata View NZXP. These upgrades are also compatible with all of PASSCAL's Multi-Channel Cable System, which were originally purchased for use with the Geometrics StrataVisor NX. These  Units employ a new concept in portable exploration seismographs. They combine the ruggedness and high signal quality of a distributed system with the convenience and cost effectiveness of personal computer-based control devices. See Geode and Stratavisor Dataloggers for more Details.

 

2010-01-19
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Sensor Comparison Chart

Sensor Manufacturer Power Corner
Frequency Damping Sensitivity Poles and Zeroes               STS-2 Streckeisen 30 ma @ 12vdc 0.0083 Hz 0.707 critical 1500 v/m/s *Depends on generation:
2010-01-11
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Flexible Array

Overview

The USArray Flexible Array is a pool of instruments that is available for PI-driven research projects associated with the goals of EarthScope.  This pool of instruments is housed at the IRIS PASSCAL Instrument Center located at New Mexico Tech in Socorro, NM. The pool consists of broadband (325), short-period (100), accelerometer (20), and controlled source (1700) stations. Using both natural and controlled sources, these portable instruments permit high-density, short-term observations of key targets within the footprint of the larger Transportable Array. USArray's flexible component offers exciting opportunities for a variety of focused investigations requiring higher-resolution images embedded within the context of the Transportable Array.

2009-12-22
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New Mexico Tech to Expand PASSCAL Instrument Center

Daniel H. López, president of New Mexico Institute of Mining and Technology (New Mexico Tech) in Socorro, authorized the expansion of the on-campus building that houses the IRIS PASSCAL Instrument Center and the EarthScope Array Operations Facility. The 1300 square foot addition, scheduled for completion in Spring 2009, will primarily provide laboratory and office space for PASSCAL’s recently expanded Polar Program activities supported primarily by the National Science Foundation’s Office of Polar Programs.

2009-12-22
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USArray

The Flexible Array is a pool of portable seismic instruments supported by the Array Operations Facility at the PASSCAL Instrument Center. The instruments are available for PI-driven research projects associated with the goals of Earthscope. The pool consists of broadband (325), short-period (100), accelerometer (20), and controlled source (1700) stations. 

2009-12-22
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Poles and Zeroes

All poles and zeroes in radians/sec

2009-12-08
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Streckeisen STS-2 Broadband Sensor

Salient Features: Flat response to velocity from 120 seconds to about 10 Hz Low power Installation Tips: Example of STS-2/RT130 Setup One-pager field sheet

  Troubleshooting Tips: If you cannot center the masses of even one of the 3 elements of the STS-2, all your data could be compromised. The document provided here will guide you to a 'manual' process for attempting to get those masses centered, IF and ONLY IF the masses do not center after repeated (a dozen tries) centering commands.  
2009-12-07
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Quanterra Q330

The Q330 is a 3 or 6 channel high resolution datalogger. It is low power and highly configurable for a wide range of applications and sensors. The Q330 is housed in a sealed aluminum enclosure which makes it highly resistant to the environment. Telemetry is a main focus of the Q330, but it also has a robust on-site data storage system which uses external Balers. This makes it easy to swap out the data storage on-site for when servicing doesn't allow an extended visit. The Q330 can write data to four different receiving systems simultaneously. It also has built-in sensor controls, an automatic mass recentering feature, and calibration functions. The Q330 is programmed with a Windows program called Willard, it can also be controlled by a PalmOS program for when working in the field.

Features:

2009-10-30
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Visiting PASSCAL

POLICY

Visitors to the PASSCAL Instrument Center should have pre-arranged appointments. Visitors should enter through the main entrance of the building and register their visit in our “Visitor’s Log”. Unarranged or unannounced visits cannot be accommodated. Please contact respective staff or send an email to passcal@passcal.nmt.edu if you wish to arrange a visit.

GENERAL INFORMATION

The PASSCAL Instrument Center is located in Socorro, New Mexico, on the New Mexico Tech campus.

IRIS Committee Members: find travel tips, expense report forms, and more here.

2009-10-28
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Weather in Socorro

National Weather Service The Weather Channel Local Forecast for Socorro
2009-10-26
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IRIS - Incorporated Research Institutions for Seismology New Mexico Institute of Mining and Technology
IRIS PASSCAL Instrument Center
New Mexico Tech
100 East Road, Socorro, NM 87801
Telephone (575) 835-5070
Fax (575) 835-5079