{"version":"1.0","type":"rich","title":"Significant Earthquake Database","description":"This visualization plots significant earthquake events from NOAA’s Significant Earthquake Database as circles, with the x-axis showing the year and the y-axis showing magnitude. Circle color encodes earthquake duration in seconds, and hovering reveals the magnitude via tooltip. Using Vega-Lite API with d3.csv for data loading, the chart renders in SVG across the full viewport. The code configures axis styling and dark text through a custom Vega-Lite config object, with marks set to semi-transparent circles for overlapping event visibility.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/95d29129b04941e49417361a62ae0397?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}