Contents of 13.3 How does isostasy relate to active geologic processes?

13.3 How does isostasy relate to active geologic processes?

map showing rate of elevation change over 10 years based on GPS data

Fig 13.14

So which model: Pratt-Airy or Flexural Isostasy, better reflect real-world data?

Here we see the response of NE North America to the removal of the glaciers. The Hudson Bay region, the center of glacial loading, is rebounding upwards over the past 10 years (in red), while the southern periphery around Chicago (the red -2.7) is adjusting downwards. Clearly, the flexural isostasy model conforms better to this data.