South America

M7.4 earthquake shakes Chile

Moderate-depth event within the subducting slab

Jul 19 •

Judith A Hubbard

and

M7.2 earthquake in southern Peru causes minor damage

Preceded by foreshock activity starting on June 16

Jun 28 •

and

Judith A Hubbard

M6 earthquake beneath northern Venezuela was felt up to 700 km away

Part of a dense, deep cluster of seismicity associated with a lithospheric tear

Jun 23 •

Judith A Hubbard

and

M5.6 earthquake strikes below Colombia

An unusual earthquake in a tectonically unusual area

Jan 20 •

Judith A Hubbard

Aftershocks of deadly earthquakes

We revisit seismicity following six deadly earthquakes in 2023

Nov 7, 2023 •

Judith A Hubbard

Does the crust wobble before some big earthquakes?

We deep-dive a 2020 Nature paper that discovered enormous crustal shifts before Mw9.2 and Mw8.8 megathrust earthquakes

Nov 3, 2023 •

and

Judith A Hubbard

Magnitude 6.7 earthquake strikes below Chile

The subduction zone here produces much larger earthquakes, but Chile has good defenses.

Oct 31, 2023 •

Judith A Hubbard

M6.3 earthquake strikes below central Chile

"Silent," "wave-like" earthquake occurred on the subduction megathrust

Sep 7, 2023 •

Judith A Hubbard

and

M5.7 earthquake in western Colombia, above the subduction zone

Curious coincidence with the South American Continental Divide!

Aug 28, 2023 •

Judith A Hubbard

and

M6.3 earthquake shakes central Colombia, seismometer records severe shaking

Earthquakes line the eastern Colombian Andes

Aug 18, 2023 •

Judith A Hubbard

and

M6.6 earthquake strikes deep below Argentina

Shaking felt by more than 17 million people across Argentina and Chile

Jul 17, 2023 •

Judith A Hubbard

and

M5.6 earthquake below Santiago caused by slab bending

Due to flat slab subduction, many South American cities are exposed to this type of hazard

Jul 9, 2023 •

Judith A Hubbard

and

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