2b:null 2c:["$","title",null,{"children":"Plot: Earthquake globe | CS 181AP Data Visualization | Observable"}] 31:T559,earthquake_globe = Plot.plot({ title: "Global Earthquakes", subtitle: "Global earthquake activity by magnitude and severity. Dot size is magnitude, and color is severity", caption: htl.html`Forked from Earthquake Globe. Data source: ANSS Comprehensive Earthquake Catalog from USGS`, projection: {type: "equal-earth"}, r: {transform: (d) => Math.pow(10, d)}, // convert Richter to amplitude style: "overflow: visible;", // allow dots to escape color: { legend: true, scheme: "YlOrRd", label: "Severity" }, marks: [ Plot.geo(land, {fill: "darkblue", fillOpacity: 0.2}), Plot.sphere({ fill: "grey", fillOpacity: 0.1, stroke: "black", strokeWidth: 2}), Plot.dot(earthquakes, { x: "longitude", y: "latitude", r: "magnitude", stroke: "sig", strokeOpacity: 0.9, fill: "sig", fillOpacity: 0.7, tip: { format: { x: false, y: false, fill: false, stroke: false, r: false } }, channels: { Severity: "sig", Place: "place", Magnitude: "magnitude", Date: d => formatDate(d.time), }}), Plot.graticule() ] })32:[{"id":"7c6167b65013c12f3978b4d8e85dd28a27e3b5eb580d1e76696ce5b0d399c196de2b02c45e734462931e1af823698e36bb072722253d5e03e7fb61222755bc0c","href":"https://static.observableusercontent.com/files/7c6167b65013c12f3978b4d8e85dd28a27e3b5eb580d1e76696ce5b0d399c196de2b02c45e734462931e1af823698e36bb072722253d5e03e7fb61222755bc0c","name":"countries-110m.json","type":"application/json","lastModified":1762708849812.307,"size":107761}] 2f:{"id":"b484cf347e5ba875","slug":null,"title":"Plot: Earthquake globe","thumbnail":"1a368b2cd5b398b550058e8848b966d1fcb8c47168a71fe76e512c35a7930226","access_level":"public","create_time":"$D2025-11-09T17:20:49.812Z","update_time":"$D2025-11-09T19:05:24.024Z","view_time":null,"first_public_time":"$D2025-11-10T00:01:07.233Z","has_unpublished_edits":null,"fork":{"id":"021a79fc5c2b6c10","slug":"plot-earthquake-globe","title":"Plot: Earthquake globe","owner":{"id":"f35c755083683fe5","login":"observablehq","name":"Observable"}},"stars":0,"starred":false,"owner":{"type":"team","id":"e602a4cc91f94fe5","login":"hmc-datavis-fall2025","name":"CS 181AP Data Visualization","avatar_url":"https://avatars-next.observableusercontent.com/24bcc4609d77ce717ddd7dc599710360ba00df258ffd8c54b83a2798539fb4b1","tier":"education_2026"},"version":123,"publish_version":null,"role":null,"authored":false,"authors":[{"type":"individual","id":"f67642f236fc3503","login":"hnoteboom","name":"Hnoteboom","avatar_url":"https://avatars-next.observableusercontent.com/aace97b3805ff6faeca620ac4a4b7c0e260af5c377b0636506585a13ae3f8bc6","tier":null}],"members":[{"type":"team","id":"e602a4cc91f94fe5","login":"hmc-datavis-fall2025","name":"CS 181AP Data Visualization","avatar_url":"https://avatars-next.observableusercontent.com/24bcc4609d77ce717ddd7dc599710360ba00df258ffd8c54b83a2798539fb4b1","tier":"education_2026","role":"editor"},{"type":"individual","id":"f67642f236fc3503","login":"hnoteboom","name":"Hnoteboom","avatar_url":"https://avatars-next.observableusercontent.com/aace97b3805ff6faeca620ac4a4b7c0e260af5c377b0636506585a13ae3f8bc6","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":2,"collection":null,"type":"notebook","body":{"titling":"auto","title":"Plot: Earthquake globe","cells":[{"id":0,"value":"

Plot: Earthquake globe

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\n\n# Earthquake globe\n\n[Projections](https://observablehq.com/plot/features/projections) and live data!","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":3,"value":"$31","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":8,"value":"world = FileAttachment(\"countries-110m.json\").json()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":9,"value":"land = topojson.feature(world, world.objects.land)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":10,"value":"earthquakes = d3.json(\"https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/2.5_week.geojson\").then(d => d.features.map(f => {\n const c = d3.geoCentroid(f);\n return {magnitude: f.properties.mag, longitude: c[0], latitude: c[1], sig: f.properties.sig, place: f.properties.place, time: formatTimeQ(f.properties.time)};\n}))","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":58,"value":"formatTimeQ = d3.utcFormat(\"%Q\");","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":104,"value":"formatDate = d3.utcFormat(\"%B %d, %Y\");","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W32","stdlib":"1"}} 30:"$2f:body"