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M7.5 South of South America - Drake Passage
- Thread starter davenn
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SUMMARY
The M7.5 earthquake that struck the Southern Drake Passage on August 22, 2025, occurred at a depth of 10.8 km, with coordinates 60.186°S and 61.821°W. The GFZ Moment Tensor solution indicates significant seismic activity, with a moment magnitude of 7.5 and a best double couple moment of 2.0 x 1020 Nm. The principal axes of the earthquake were characterized by values of T=1.92, N=0.19, and P=-2.10, reflecting the complex tectonic interactions in this region.
PREREQUISITES- Understanding of seismic moment tensor analysis
- Familiarity with earthquake magnitude scales, specifically moment magnitude (Mw)
- Knowledge of geolocation coordinates in seismic studies
- Basic principles of tectonic plate interactions in the Drake Passage region
- Research the implications of moment tensor solutions in earthquake analysis
- Study the geological features of the Drake Passage and their impact on seismic activity
- Learn about the methodologies used in seismic event detection and reporting
- Explore the historical seismicity of the Southern Drake Passage region
Seismologists, geophysicists, and researchers studying tectonic activity in the Southern Hemisphere, particularly those focusing on the Drake Passage and its seismic implications.
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Code:
GFZ Event gfz2025qjws
25/08/22 02:16:19.70
Drake Passage
Epicenter: -60.22 -61.74
MW 7.5
GFZ MOMENT TENSOR SOLUTION
Depth 32 No. of sta: 145
Moment Tensor; Scale 10**20 Nm
Mrr= 0.31 Mtt= 0.79
Mpp=-1.09 Mrt= 0.53
Mrp= 0.04 Mtp= 1.68
Principal axes:
T Val= 1.92 Plg=16 Azm=330
N 0.19 72 130
P -2.10 5 238
Best Double Couple:Mo=2.0*10**20
NP1:Strike=105 Dip=82 Slip= 15
NP2: 13 74 171
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Last updated 2025-08-22 04:53:19 UTC- #3
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New Zealand had a 5.3 at 10km depth about 800 km NNE of Auckland at 09:33:35.9 UTC. Did you "see" that?
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