Aaron Becker
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aaronjbecker.bsky.social
Aaron Becker
@aaronjbecker.bsky.social
animated maps that move you
mapped.earth
Each fall about 590,000 Common Cranes leave Scandinavia, Germany, Finland and Russia for Spain, France, Israel and Ethiopia.

Dots are simulated birds placed from eBird sightings via @gbif.org and Movebank GPS tracks.

#birds #birdmigration
November 2, 2026 at 7:03 PM
North America's Dunlin are two populations that rarely mix: one nests in western Alaska and winters on the Pacific, the other nests around Hudson Bay and winters on the Atlantic.

Dots are simulated birds built from eBird sightings via @gbif.org and USGS band recoveries.

#birds #birdmigration
November 2, 2026 at 3:32 PM
Half the people in Ontario, Quebec, New Brunswick, Nova Scotia, Prince Edward Island and Newfoundland and Labrador live on less than a quarter of one percent of the land.

Data: Kontur Population 2023

#dataviz #maps #gischat
November 1, 2026 at 2:55 PM
Each fall more than 5 million Snow Geese leave the Arctic around Hudson Bay and pour south to the rice fields and marshes of Arkansas, Louisiana and Texas.

Dots are simulated birds placed from eBird sightings via @gbif.org and USGS band recoveries.

#birds #birdmigration
November 1, 2026 at 1:04 PM
Half the people in British Columbia, Yukon, the Northwest Territories, Alberta, Saskatchewan, Nunavut and Manitoba live on less than a twentieth of one percent of the land.

Data: Kontur Population 2023

#dataviz #maps #gischat
October 31, 2026 at 6:55 PM
Lighthouses of Greece, from Othonoi to Strongyli off Kastellorizo. The big stations sweep; harbor lights and buoys blink on the rhythm printed on the chart. Spetses, lit in 1837, was among the first lighthouses of the new Greek state.

Data: OpenStreetMap, NGA

#Greece #Lighthouses #Maps
October 30, 2026 at 3:07 PM
Twice a day the tide flows in and out of the Rade de Brest through one narrow strait, the Goulet. In this neap week the range at Brest fell to 1.7 meters and the Goulet's jet eased, then built again.

Data: Ifremer MARC, MARS3D model (open license); coastline © OpenStreetMap contributors
#Brest
October 30, 2026 at 12:02 PM
Lower the North Sea just 30 meters and Dogger Bank becomes an island. Keep going and Britain joins Europe across Doggerland, but the Irish Sea was full of ice, not land.

Data: EMODnet, NOAA ETOPO 2022, ICE-6G_C

#geography #maps #ocean
October 29, 2026 at 6:32 PM
North America's rivers in stream order: the great trunks first, then each smaller branch off the river it feeds, down to the headwaters. 533,718 miles of waterways in total.

Data: HydroRIVERS (HydroSHEDS). Relief: Terrain Tiles.
October 28, 2026 at 3:31 PM
The biggest share of North America's Redheads winters in one shallow lagoon, the Laguna Madre on the Texas and Tamaulipas coast.

Dots are simulated birds placed from eBird sightings via @gbif.org and USGS band recoveries.

#birds #birdmigration
October 27, 2026 at 12:03 PM
Every river in Europe, every day for two years. The combined flow to the sea sinks as low as 43,000 m³/s in winter and swells past 125,000 by early June, nearly tripling as the snow melts. Data: GloFAS, @copernicusecmwf.bsky.social

#rivers #dataviz #hydrology
October 26, 2026 at 6:02 PM
Black Sea water pours through the Bosphorus, swings west along the Sea of Marmara's northern shore and drains through the Dardanelles into the Aegean. A week of surface currents, hour by hour.

Data: E.U. Copernicus Marine Service (model)
October 26, 2026 at 6:02 AM
Lower the Mediterranean just 110 metres and you can walk from Malta to Sicily. Keep draining and the floor sits on a kilometre of salt from the last time this sea dried out.

Data: EMODnet, NOAA ETOPO 2022, ICE-6G_C

#geography #maps #ocean
October 25, 2026 at 6:32 PM
Over three million Lesser Scaup nest on the lakes of the western boreal forest and the prairies, then winter on the Gulf Coast, Florida and Chesapeake Bay.

Dots are simulated birds placed from eBird sightings via @gbif.org and USGS band recoveries.

#birds #birdmigration
October 25, 2026 at 12:02 PM
Nearly three million Greater White-fronted Geese winter in the rice fields and marshes of the Gulf Coast, then nest on the Arctic tundra from Alaska to Nunavut.

Dots are simulated birds placed from eBird sightings via @gbif.org and USGS band recoveries.

#birds #birdmigration
October 24, 2026 at 12:03 PM
Half the people in New York, Pennsylvania, New Jersey, Massachusetts, Connecticut, New Hampshire, Maine, Rhode Island, Delaware and Vermont live on less than 3% of the land.

Population density, most populous first. Data: Kontur Population 2023

#dataviz #maps #gischat
October 23, 2026 at 6:25 PM
Half the people in Florida, Ohio, Georgia, North Carolina, Virginia, Tennessee, Maryland, South Carolina, Kentucky and West Virginia live on about 4% of the land.

Population density, most populous first. Data: Kontur Population 2023

#dataviz #maps #gischat
October 22, 2026 at 4:43 PM
Germany nearly tripled after 1871, from 29 million to 83 million people. The five eastern states went the other way: 12.4 million live there today, fewer than in 1910.

Data: GPOP (Rösel 2022), Destatis

#maps #dataviz #Germany
October 22, 2026 at 1:02 PM
Lake Lucerne barely moved all week: surface water drifted about a kilometre a day, yet the basin off Gersau still turned anticlockwise while the Urnersee turned the other way.

11-17 Oct 2026, every three hours.

Data: Alplakes lake model, Eawag (CC BY 4.0)

#LakeLucerne #Switzerland #DataViz
October 22, 2026 at 6:03 AM
Half the people in Texas, Colorado, Alabama, Louisiana, Oklahoma, Arkansas, Kansas, Mississippi, Hawaii and Alaska live on less than 1% of the land.

Population density, most populous first. Data: Kontur Population 2023

#dataviz #maps #gischat
October 21, 2026 at 4:32 PM
The southern end of Lago di Garda turned slowly clockwise all week, one gyre filling the basin, and most afternoons the lake picked up speed.

11-17 Oct 2026, every three hours.

Data: Alplakes lake model, Eawag (CC BY 4.0)

#LakeGarda #Italy #DataViz
October 21, 2026 at 6:01 AM
Half the people in ten Midwestern states live on about 1.5% of the land.

Population density, most populous first. Data: Kontur Population 2023

#dataviz #maps #gischat
October 20, 2026 at 4:32 PM
Super Typhoon Champi's hurricane-force winds cover three times the area of Taiwan at their peak on Thursday. Most of it dies at sea before the eye comes ashore near Taitung on Friday night. NOAA HAFS forecast, Oct 19.

#Taiwan #typhoon #weather #dataviz
October 20, 2026 at 2:01 PM
Manhattan peaked in 1910 at 2.3 million people. One Lower East Side census tract held 44,000 people on 50 acres; those blocks now hold about one person for every four.

Data: IPUMS NHGIS · Bromley atlases, NYPL

#dataviz #maps #NYC #history
October 20, 2026 at 12:02 PM
Lac Léman sat almost still all week. Then on Saturday afternoon the whole lake woke up: by 8 PM its typical surface current was five times faster than that morning. Surface currents, 11 to 17 October 2026.

Data: Alplakes lake model, Eawag (CC BY 4.0, adapted)

#LacLéman #dataviz
October 20, 2026 at 6:02 AM