Gem

The Gem is an open-source integrated infrasound sensor-logger optimized for low cost, low power consumption, high portability, and ease of installation/concealment. 

Gem or infraBSU?

The per-sensor cost of the two systems is similar when you  consider the data logger that must be used with the infraBSU, but they fill different roles. In short, the Gem is a self-contained sensor-logger intended for easy transport and deployment, whereas the infraBSU is a sensor intended to be connected to external geophysical loggers. 

Consider the Gem if...

• You need to transport and deploy many sensors with few workers

• The field team has limited infrasound recording experience

• You want to use just one or two sensors per site, or any sensor geometry other than small triangular arrays

• You need instruments with a small footprint that are easy to conceal

• You are recording from an aerial platform (e.g., drone or balloon) and need to minimize payload weight

Consider the infraBSU if...

• You already have a data logging or telemetry system you want to use with your sensors 

• You are already setting up a high-effort station with centralized power

• You need to study frequencies outside the Gem's passband (above 27 Hz)

Purchasing:

Email jacobanderson152@boisestate.edu for a quote including Gems; please include basic information on your intended applications and needs to ensure that the product is appropriate for you. 

Resources:

• Datasheet (shown below)

• Quick Start User Guide

• Data Conversion Software Installation/Instructions (Python package "gemlog")

• Real-Time Data Streaming with the Gem

• Paper: Anderson et al., 2018. The Gem Infrasound Logger and Custom-Built Instrumentation