2f:T559,earthquake_globe = Plot.plot({ title: "Global Earthquakes", subtitle: "Global earthquake activity by magnitude and severity. Dot size is magnitude, and color is severity", caption: htl.html`Forked from Earthquake Globe. Data source: ANSS Comprehensive Earthquake Catalog from USGS`, projection: {type: "equal-earth"}, r: {transform: (d) => Math.pow(10, d)}, // convert Richter to amplitude style: "overflow: visible;", // allow dots to escape color: { legend: true, scheme: "YlOrRd", label: "Severity" }, marks: [ Plot.geo(land, {fill: "darkblue", fillOpacity: 0.2}), Plot.sphere({ fill: "grey", fillOpacity: 0.1, stroke: "black", strokeWidth: 2}), Plot.dot(earthquakes, { x: "longitude", y: "latitude", r: "magnitude", stroke: "sig", strokeOpacity: 0.9, fill: "sig", fillOpacity: 0.7, tip: { format: { x: false, y: false, fill: false, stroke: false, r: false } }, channels: { Severity: "sig", Place: "place", Magnitude: "magnitude", Date: d => formatDate(d.time), }}), Plot.graticule() ] })30:[{"id":"7c6167b65013c12f3978b4d8e85dd28a27e3b5eb580d1e76696ce5b0d399c196de2b02c45e734462931e1af823698e36bb072722253d5e03e7fb61222755bc0c","href":"https://static.observableusercontent.com/files/7c6167b65013c12f3978b4d8e85dd28a27e3b5eb580d1e76696ce5b0d399c196de2b02c45e734462931e1af823698e36bb072722253d5e03e7fb61222755bc0c","name":"countries-110m.json","type":"application/json","lastModified":1762708849812.307,"size":107761}] 2d:{"title":"Plot: Earthquake globe","cells":[{"id":0,"value":"

Plot: Earthquake globe

Observable Plot › Gallery

\n\n# Earthquake globe\n\n[Projections](https://observablehq.com/plot/features/projections) and live data!","pinned":false,"hidden":false,"mode":"md"},{"id":3,"value":"$2f","pinned":false,"hidden":false,"mode":"ojs"},{"id":8,"value":"world = FileAttachment(\"countries-110m.json\").json()","pinned":true,"hidden":false,"mode":"ojs"},{"id":9,"value":"land = topojson.feature(world, world.objects.land)","pinned":true,"hidden":false,"mode":"ojs"},{"id":10,"value":"earthquakes = d3.json(\"https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/2.5_week.geojson\").then(d => d.features.map(f => {\n const c = d3.geoCentroid(f);\n return {magnitude: f.properties.mag, longitude: c[0], latitude: c[1], sig: f.properties.sig, place: f.properties.place, time: formatTimeQ(f.properties.time)};\n}))","pinned":true,"hidden":false,"mode":"ojs"},{"id":58,"value":"formatTimeQ = d3.utcFormat(\"%Q\");","pinned":true,"hidden":false,"mode":"ojs"},{"id":104,"value":"formatDate = d3.utcFormat(\"%B %d, %Y\");","pinned":true,"hidden":false,"mode":"ojs"}],"files":"$W30","stdlib":"1","titling":"auto"}