Large avalanche

Large avalanche onto Black Rapids glacier, caused by the great MW 7.9 earthquake of November 2nd, 2002. (Photo: Kerry Sieh)

Mangroves in inter-tidal zone

Mangroves in inter-tidal zone, drowning because of slow subsidence of the Mentawai islands, West Sumatra. (Photo: Kerry Sieh)

Top of Porites microatoll

Close-up of top of Porites microatoll that was raised 1.5m above sea-level and killed during the giant MW 9.2 earthquake. This shows it was submerging in the years pri...

GPS station

The GPS station on the west coast of Sumatra near the Equator.  The coastal town of Air Bangis is in the background. (Photo: Kerry Sieh)

1-metre uplift

Uplift of about 1-metre during the great earthquake of 20 March 2005 exposed this wide coral reef and killed the two big coral heads on the right.  Near Nias Isla...

Researchers

Researchers measuring the uplift that occurred during the giant MW 9.2 earthquake of 26 December 2004.  The flat top of the coral formed at low tide, but is now 1...

Living Reef

Living reef (still underwater) at Pulau Siopasigoiso at low tide.  Only the highest 10 cm of soft coral tissue has died or is bleaching, due to minor uplif...

Bulusan Volcano, Philippines

Bulusan Volcano, Philippines, latest small . (Photo: Mariton Bornas / PHIVOLCS)

Mayon Volcano, Philippines

Mayon Volcano, Philippines, with Legazpi City in foreground. (Photo: Mariton Bornas / PHIVOLCS)

Pyroclastic fall

Pyroclastic fall and surge deposits from Atitlan caldera, Guatemala (Photo: Chris Newhall)

School Buildings

Two generations of school buildings, Santa Barbara, Bacolor.  Both were eventually buried by lahars from Pinatubo. (Photo: Chris Newhall)

Basaltic Magma

Mingling of rhyolitic and fresh basaltic magma in 84,000 year-old caldera-forming eruption,Atitlan caldera, Guatemala (Photo:Chris Newhall)

Pagai 1

Pagai 2