Dust flux, Vostok ice core

Dust flux, Vostok ice core
Two dimensional phase space reconstruction of dust flux from the Vostok core over the period 186-4 ka using the time derivative method. Dust flux on the x-axis, rate of change is on the y-axis. From Gipp (2001).
Showing posts with label Alaska. Show all posts
Showing posts with label Alaska. Show all posts

Sunday, October 23, 2016

Landslide in Alaska - aerial views

In the past two years there have been some spectacular avalanches in Alaska.

The first happened in Icy Bay, and caused a tsunami estimated to have been nearly 200 m high.

The second happened earlier this year in Glacier Bay, a little farther south, and seems to have missed the water, but left a large deposit on top of the ice.

Here are a couple of pictures of the second landslide, taken about two months ago as I flew over Alaska.



Wednesday, July 6, 2016

Coastal Alaska

Good weather when flying down the coast of Alaska, on the way to Vancouver from Beijing. My first photographic survey of the coastal glaciers there in about 20 years.




Glacier, trailing to the upper right.


Mount McKinley (Denali to Alaskans) in the distance.




Glacier feeding into a lake, with another at top.




Glaciers cascading into a fjord.


 


If this is the one I think it is, it has receded quite a lot in the last twenty years. Most of the water in the foreground was under glacial ice the last time I photographed it.
 
 

All of these were photographed digitally, and the colours were rebalanced afterwards. The original shots are too blue. The brownish shading on the left is a reflection from the edge of the window.