# Source terms and attribution

USGS-produced factual data are in the US public domain. ComCat includes contributing networks; preserve original attribution and source fields. No blanket CC0 grant for third-party material or worldwide rights is asserted. Natural Earth map data are public domain: https://www.naturalearthdata.com/about/terms-of-use/ . No source logos or protected media are included. Original Meplar charts and code are separate works; no new license for them is asserted here.

USGS ANSS ComCat query, 2025 magnitude 4.5+: https://earthquake.usgs.gov/fdsnws/event/1/query?format=csv&starttime=2025-01-01&endtime=2026-01-01&minmagnitude=4.5&eventtype=earthquake&orderby=time-asc
USGS ComCat documentation: https://earthquake.usgs.gov/data/comcat/
USGS earthquake depth definitions: https://www.usgs.gov/programs/earthquake-hazards/determining-depth-earthquake
Natural Earth coastline: https://naturalearth.s3.amazonaws.com/110m_physical/ne_110m_coastline.zip

Data rights reference: https://www.usgs.gov/faqs/are-usgs-reportspublications-copyrighted