Seen a stunning sunrise or sunset lately? The Tongan volcano may be the cause

Seen a stunning sunrise or sunset lately? The Tongan volcano may be the cause

To understand these sightings, the forecasting team contacted their colleagues at the Lauder Atmospheric Research Station in Central Otago, who confirmed that their ground-based LIDAR (Light Detection and Ranging) instrument has been detecting unusual spikes in aerosols in the stratosphere, at around 20-25 kilometres above New Zealand.

Why Was the Tonga Eruption So Massive? Scientists Have New Clues

Why Was the Tonga Eruption So Massive? Scientists Have New Clues

A team of scientists from New Zealand’s National Institute of Water and Atmospheric Research, or NIWA, recently observed something different.The slopes of the underwater volcano are still largely as they were before the eruption; the same features still contour the surrounding seafloor.

Tonga eruption discoveries defy expectations

Tonga eruption discoveries defy expectations

NIWA’s research vessel, RV Tangaroa , has returned from a month-long expedition as part of the Nippon Foundation-funded Tonga Eruption Seabed Mapping Project (TESMaP), where scientists were studying the effects of January’s eruption of Hunga Tonga–Hunga Ha'apai (HT – HH).

Scientists Are Racing to Understand the Fury of Tonga’s Volcano

Scientists Are Racing to Understand the Fury of Tonga’s Volcano

Ten-thousand miles away in England, Simon Proud, a satellite data researcher at the University of Oxford, began to monitor the twitching volcano using an array of satellites.Then, early in the morning on January 14 local Tongan time, a 12-mile-high plume of ash pierced the sky.

Explosive research sheds light on volcanic tsunami

Explosive research sheds light on volcanic tsunami

The following video shows glass beads being tipped down aerated ramps into water to mimic what happens when pyroclastic flows hurtle down the sides of erupting volcanoes: .

Satellites Can Help Detect When a Volcano's About to Blow

Satellites Can Help Detect When a Volcano's About to Blow

A new study from a Jet Propulsion Laboratory group led by Társilo Girona highlights the possibility that presently available satellite data could provide an entirely new way to warn of eruptions .Heat is obviously a relevant parameter for volcanic activity, but it can be quite variable at the individual spots where you might set up a thermometer.

Discovered: The World’s Highest-Dwelling Mammal

Discovered: The World’s Highest-Dwelling Mammal

© Marcial Quiroga-Carmona A scientific expedition to survey high-altitude wildlife in northern Chile documented the world’s highest dwelling mammal, the yellow-rumped leaf-eared mouse ( Phyllotis xanthopygus ) .

What on Earth Is Water Doing in Hawaii's Kilauea Volcano?

What on Earth Is Water Doing in Hawaii's Kilauea Volcano?

But they won't know for sure until they sample it, which could entail a helicopter and a bucket on a rope (ain't science grand).WIRED sat down with Don Swanson, a geologist with the USGS, to learn more about why Kilauea's been transforming of late, why it's not going to blow Hawaii to pieces, and why it's good news that the volcano's lava is a bit runny.

New Analysis Techniques Unearth a Trove of Unusual Minerals

New Analysis Techniques Unearth a Trove of Unusual Minerals

“But the number of discoveries is increasing.” To qualify as new minerals, these materials must be never-before-seen natural combinations of one or more elements in solid form, arranged in a repeating structure.

Weatherwatch: Charles Keeling's CO2 curve shows drastic rise in 60 years

Weatherwatch: Charles Keeling's CO2 curve shows drastic rise in 60 years

His first measurements in 1958 showed 315 parts per million (ppm) of CO2 in the atmosphere, and what caught him by surprise was that every year after that the levels of CO2 rose relentlessly in an upward curve, thanks to the carbon pollution pumped into the Earth’s atmosphere.

Global warming to lead to more volcano eruptions, researchers warn

Global warming to lead to more volcano eruptions, researchers warn

Mr Roberti continued: “This is the first time this has happened there – so the equilibrium of the mountain is changing.“We see a correlation between high temperature, ice melting and landslides.“Today’s increasing temperature is likely to cause other large landslides.”