M 4.6 - 69 km SE of Unalaska, Alaska
- 2022-08-07 14:01:46 (UTC)
- 53.484°N 165.707°W
- 43.1 km depth
ShakeMap
- The data below are the most preferred data available
- The data below have NOT been reviewed by a scientist.
Processing
| Type | Module | Reference |
|---|---|---|
| GMPE | gmpe_ak022a2f1dyu_custom | |
| IPE | VirtualIPE | |
| GMICE | WGRW12 | |
| CCF | LothBaker2013 | |
| Basin | None | |
| Directivity | None |
- Max magnitude to compute bias
- 7.0
- Maximum distance to include station in bias
- 120.0
- Use log amp to compute bias
- -
- Max allowed bias
- -
- Use log amp to compute bias
- -
- Min # of stations necessary to compute bias
- -
- Norm of the bias
- -
- Median distance used
- True
- Outlier level (# of std dev)
- 3.0
- Max magnitude to flag outliers
- 7.0
- Code
- 4.0.2+442.g4808b2c.dirty
- Github commit
- 4808b2c51b72874ee70a5cc986aaa0434c173b53
- Map version
- 2
- Date
- 2022-08-07 18:42:07 (UTC)
| Map Version | Network | Processing Time | Comment |
|---|---|---|---|
| 1 | ak | 2022-08-07 14:03:26 (UTC) | automatic run |
| 2 | ak | 2022-08-07 18:41:19 (UTC) | automatic run |
- Reference rock Vs30
- 760.0
- Site correction applied
- GMPE native
Output
| Type | Max Value in Grid | Max Value on Land | Bias |
|---|---|---|---|
| PGV | -1.807 cms | -2.754 cms | 0.094 |
| SA(1.0 s) | 0.002 g | 0.001 g | - |
| PGA | 0.007 g | 0.002 g | 0.262 |
| SA(3.0 s) | 0 g | 0 g | - |
| SA(0.3 s) | 0.011 g | 0.003 g | - |
| Intensity | 2.718 intensity | 2.095 intensity | -0.001 |
| Type | Latitude | Longitude |
|---|---|---|
| Number of points | 433 | 723 |
| Grid spacing | 0.0083333 degrees | 0.0083333 degrees |
| Span | 3.6 degrees | 6.017 degrees |
| Min | 51.617 degrees | -168.517 degrees |
| Max | 55.217 degrees | -162.5 degrees |
- Mean of map uncertainty
- -
- Empirical ShakeMap grade
- --
- Flagged Seismic Stations
- 0
- Flagged DYFI stations
- 3
Input
- Description
- 74 km (46 miles) SE of Unalaska
- ID
- ak022a2f1dyu
- Magnitude
- 4.12
- Depth
- 27.8 km
- GPS location
- 53.455°N 165.655°W
- Origin time
- 2022-08-07 14:01:46 (UTC)
- Mechanism
- -
- Mechanism source
- RS
- Location
- 74 km (46 miles) SE of Unalaska
- Fault files
- -
- Fault reference
- Origin
- Number of seismic stations
- 4
- Number of DYFI stations
- 0
Ground Motion Models
| Name | Weight | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.00 | ||||||||||
| 1.00 | ||||||||||
| 0.00 |
| Name | Weight | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.00 | ||||||||||
| 1.00 | ||||||||||
| 0.00 |
| Name | Weight | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.00 | ||||||||||
| 1.00 | ||||||||||
| 0.00 |
| Name | Weight | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.00 | ||||||||||
| 1.00 | ||||||||||
| 0.00 |
| Name | Weight | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.00 | ||||||||||
| 1.00 | ||||||||||
| 0.00 |