Drag: rotate · wheel or pinch: zoom · right click or Shift + drag: pan · double click: move closer · click: record
Method and sources
The globe shows the map layers of the site, loaded on demand from the same services as the page of each phenomenon (one record per element: its date, its measurement, its source). The daytime basemap is NASA’s Blue Marble mosaic, the night one the Black Marble 2016 lights; the day–night boundary is computed for the current time from the apparent position of the Sun (sub-solar point, accurate to a few tenths of a degree).
The links offered for an element are the correspondence tests of the site that involve this phenomenon, with their verdict (clear link or inconclusive). The elements “nearby” are those of the other layers shown within 600 km: proximity is not a relationship, only statistical tests establish one.
Reading these data
The layers do not all cover the same period: earthquakes of the last 30 days, active volcanoes of the week, cyclones of the year, eruptions since 1900, tsunamis since Antiquity. The record of each element gives its date. Aurora and ionosphere are NOAA models or maps updated every 5 to 15 minutes; points are drawn above the ground to stay readable, not at their real altitude.
SOURCES OF THIS PAGE
- Stöckli et al. (2005)
-
Stöckli, R., Vermote, E., Saleous, N., Simmon, R., & Herring, D. (2005). The Blue Marble Next Generation: a true color earth dataset including seasonal dynamics from MODIS. NASA Earth Observatory.
Licence : Published literature; cited - Román (2018)
-
Román, M. O., et al. (2018). NASA’s Black Marble nighttime lights product suite. Remote Sensing of Environment, 210, 113–143. Image: NASA Earth Observatory, Earth at Night 2016.
· doi:10.1016/j.rse.2018.03.017
Licence : Published literature; cited