Some of the BINARY data have incorrect boundary box coordinates in the Header Info. We suggest you obtain 2007 Alaska hazards data from the new Unified Hazards Tool.

Data files are presented in two formats, text and binary. Both formats for a given file contain the same information. The text file is white-space delimited and can easily be imported into your favorite spreadsheet application (i.e. Microsoft Excel™) for further analysis. The binary format is more useful for programatic access from custom pieces of software.

Full hazard curve data is also available for download.

File Contents Spectral Acceleration Return Period Downloads
Ground Motion 0.1 Second (10Hz) 10% in 50 Years [ TEXT | BINARY ]
Ground Motion 0.2 Second (5Hz) 10% in 50 Years [ TEXT | BINARY ]
Ground Motion 0.3 Second (3.33Hz) 10% in 50 Years [ TEXT | BINARY ]
Ground Motion 0.5 Second (2Hz) 10% in 50 Years [ TEXT | BINARY ]
Ground Motion 1.0 Second (1Hz) 10% in 50 Years [ TEXT | BINARY ]
Ground Motion 2.0 Second (0.5Hz) 10% in 50 Years [ TEXT | BINARY ]
Ground Motion Peak Ground Acceleration 10% in 50 Years [ TEXT | BINARY ]
Ground Motion 0.1 Second (10Hz) 2% in 50 Years [ TEXT | BINARY ]
Ground Motion 0.2 Second (5Hz) 2% in 50 Years [ TEXT | BINARY ]
Ground Motion 0.3 Second (3.33Hz) 2% in 50 Years [ TEXT | BINARY ]
Ground Motion 0.5 Second (2Hz) 2% in 50 Years [ TEXT | BINARY ]
Ground Motion 1.0 Second (1Hz) 2% in 50 Years [ TEXT | BINARY ]
Ground Motion 2.0 Second (0.5Hz) 2% in 50 Years [ TEXT | BINARY ]
Ground Motion Peak Ground Acceleration 2% in 50 Years [ TEXT | BINARY ]
Ground Motion 0.1 Second (10Hz) 5% in 50 Years [ TEXT | BINARY ]
Ground Motion 0.2 Second (5Hz) 5% in 50 Years [ TEXT | BINARY ]
Ground Motion 0.3 Second (3.33Hz) 5% in 50 Years [ TEXT | BINARY ]
Ground Motion 0.5 Second (2Hz) 5% in 50 Years [ TEXT | BINARY ]
Ground Motion 1.0 Second (1Hz) 5% in 50 Years [ TEXT | BINARY ]
Ground Motion 2.0 Second (0.5Hz) 5% in 50 Years [ TEXT | BINARY ]
Ground Motion Peak Ground Acceleration 5% in 50 Years [ TEXT | BINARY ]

File Formats

Text File Formats

These files are simple white-space delimited files. The format should be farily easy to decipher without much guidance.

Binary File Formats

These files were created from the text files and have the same format. In order to help with programatic reading of these files there is additional header information at the top of these files. Header information contains:

For convenience we provide sample binary file readers for potential developers to examine the source and get a better idea of how to read the file format. Download our reader (requires Java™). To use this application, open a command line terminal and type: java -jar HIParser.jar <datafile>.