The other Hawaii: observing Haleakala

For a Kilauea update, see the bottom of the post Astronomy is a dangerous science. It is not just the fact that astronomers love to blow things up. Exploding stars are their bread and butter. For a bit of adventure, they collide black holes. And who else would start the history of everything with a…

Puna 2018

Update May 8 No major changes. The lava pond in Kilauea is now reported as 220 meters down, and may still be dropping. The most recent images suggest it is still going down. Below 400 meters there would be a risk of ground water getting into the hole with phreatic consequences, but so far there…

Puna 2018

Volcanoes spring predictable surprises. Ever since Puʻu ʻŌʻō began to inflate it was clear that a new break-out was brewing. The 61-G flow had been in decline for many months: the spectacular ocean entry had ceased some time ago, and the flows had withdrawn to within a few miles of the origin. That is typical…

Volcanic illusions

Is this the most northerly elephant in the world? 200 meter tall and rising from the Atlantic Ocean, this Neptunic elephant lives at Heimaey Island, off the south coast of Iceland. A combination of basalt and wave erosion has left a convincing elephant head, complete with deeply wrinkled trunk. There are other elephant rocks in…

Dissecting Hekla

Hekla is the most mysterious of Iceland’s many volcanoes. Its brooding summit overlooks the broken plains 800 meter below as if it were an English Lord (or perhaps Lady) of the Manor. The fiefdom looks bare and uninviting, but that is not purely Hekla’s fault: once this was dense forest, but it was cut down…

The Bogoslof update

A year ago there were frequent eruptions of Bogoslof volcano. But over the months, it dropped out of the news, as the eruption quieted down and finally ceased. This brief post is a recoup of what came before, and what the state of the island is now. Bogoslof is one (and sometimes two or three)…

When Pinatubo turned the tide

The sea is our fascination. We go out of our ways to find it, and it is where we go for holidays, spending our time lying on the beach. Close to half the world’s population lives within 100 kilometers of the coast. For those who live here, there is a good living to be had,…