• A satellite revolution in oceanography

    Plymouth is one of England’s historic port cities, a place from which sailors, soldiers and scientists have set off to sea for centuries. Today there’s a new twist to the tale though, as oceanographers now have a huge fleet of satellites in space to add to t

  • Aerial footage of Chile’s Calbuco volcano spewing ash

    After 43 years of sleep, Chile's Calbuco volcano experienced a major eruption on April 22, 2015 ejecting ash plume up to 12.1 km. A 20 kilometer exclusion zone was established around the volcano and over 4 000 people within this exclusion zone were evacuated during

  • Ash emissions observed at Manam volcano, Papua New Guinea

    Darwin VAAC reports an ash plume up to 2.4 km (8 000 feet) was observed above the Manam volcano, Papua New Guinea at 00:30 UTC on April 27, 2015. It extended about 111 km to the west.A pronounced SO2 plume can be seen on satellite data as well, Volcano Discovery reports

  • More than 50 cm of hail fall on Sydney, Australia

    A booming cold system which formed over the southwest slopes and the Blue Mountains hit Sydney, Australia with destructive winds and devastating hail on April 25, 2015.Seven factories collapsed under more than 50 cm (20 inches) of hail while roads turned into rivers.

  • Huge magma chamber discovered deep beneath the Yellowstone supervolcano

    A team of University of Utah seismologists discovered and made images of a reservoir of hot, partly molten rock about 19 to 45 km (12 to 28 miles) beneath the Yellowstone supervolcano, and it is 4.4 times larger than the shallower, long-known magma chamber.The hot rock

  • Strong M6.2 earthquake hits South Island, New Zealand

    A strong earthquake registered by New Zealand's GEONET as M6.2 hit South Island, New Zealand at 03:36 UTC on April 24, 2015 at a depth of 52 km (32.3 miles). This classes the earthquake as severe but due to the depth of the quake and distance from populated centers,