The Registry of Open Data on AWS is now available on AWS Data Exchange
All datasets on the Registry of Open Data are now discoverable on AWS Data Exchange alongside 3,000+ existing data products from category-leading data providers across industries. Explore the catalog to find open, free, and commercial data sets. Learn more about AWS Data Exchange

Open VLF: Scientific Open Data Initiative for CRAAM's SAVNET and AWESOME VLF Data.

archives astronomy atmosphere global open source software signal processing


This platform is maintained by CRAAM (Mackenzie Radio Astronomy and Astrophysics Center), a research center operated by UPM (Mackenzie Presbyterian University) and INPE (National Institute for Space Research), to provide public and free access for researchers, students, and the interested public to VLF (Very Low Frequency) data from CRAAM's antenna systems. Amazon AWS supports all data stored through the AWS Open Data Program. Very Low Frequency (VLF) signals can be used for navigation services, communication with submarines, and are a powerful tool to study the low-altitude Earth's ionosphere, atmospheric and geophysics phenomena, space weather, magnetic field, and solar flares. Here, we provide historical and updated VLF data from two of CRAAM’s antenna systems, the SAVNET and AWESOME systems. The SAVNET consists of a network of 11 VLF receiving/tracking stations located in Latin America and Antarctica. Five stations are in Brazil, three in Peru, one in Argentina, one in Mexico, and one in the Brazilian Antarctic Research Station Comandante Ferraz. The CRAAM AWESOME systems include two antennas in Brazil and Antarctica. Data since 2002 from both systems are available, with occasional gaps during periods when data collection is interrupted. Data provided here is stored in different formats (.mat for AWESOME antenna system and .fits for SAVNET system). For documentation and details, please visit the project website Open VLF.

Update Frequency

Various. Data since 2006, and still updated. Follow the announcements and what is new on the project website Open VLF.


There are no restrictions on the use of this data.


Open VLF

Managed By

CRAAM Mackenzie

See all datasets managed by CRAAM Mackenzie.


Open VLF Feedback

How to Cite

Open VLF: Scientific Open Data Initiative for CRAAM's SAVNET and AWESOME VLF Data. was accessed on DATE from

Usage Examples

Tools & Applications

Resources on AWS

  • Description
    The Open VLF Files. Total size of 73.6 GB
    Resource type
    S3 Bucket
    Amazon Resource Name (ARN)
    AWS Region
    AWS CLI Access (No AWS account required)
    aws s3 ls --no-sign-request s3://craam-files-bucket/

Edit this dataset entry on GitHub

Tell us about your project