48 Years of Alaska's Glaciers

The video tutorial explores the changing ice cover and the advancements in observational glaciology through remote sensing. It highlights the creation of a historical record of glacier speeds and changes, allowing for the observation of glacier movements and their environmental impacts. The tutorial delves into glacier dynamics and behavior, using video analysis to understand these processes. Additionally, it discusses the compilation of Landsat records to study long-term ice trends in Alaska and the Yukon, providing insights into the rapidly changing parts of our planet.

What significant change in observational glaciology is highlighted in the first section?

• The discovery of new glaciers

• The use of drones for glacier observation

• The introduction of satellite imagery in 1972

• The reduction in glacier sizes

How do the Walsh and Logan Glaciers behave over time?

• They continuously flow at a constant speed

• They remain stationary without any movement

• They experience periods of faster motion followed by stillness

• They melt completely every year

What analogy is used to describe the Malaspina Glacier?

• A flowing river

• A large puddle of ice

• A mountain peak

• A frozen lake

What is the significance of the Landsat records mentioned in the third section?

• They help in predicting future weather patterns

• They are used to map ocean currents

• They provide a short-term view of glacier changes

• They allow for the observation of long-term trends in ice behavior

What does the persistent observational capability of Landsat provide?

• A limited view of glacier changes

• A better understanding of rapidly changing parts of the planet

• An outdated method of studying glaciers

• A focus on only one region of the world