 A raised beach in an area of Yakutat Bay, Alaska, uplifted by 47 feet in the 1899 earthquakes. The white patches on the cliff in the foreground are the remains of bryozoa, which would have been in the inter-tidal zone when alive. | |
  | |
| UTC time | 1899-09-10 |
|---|---|
| USGS-ANSS | ComCat |
| Local date | September 10, 1899 |
| Local time | 12:22 |
| Magnitude | 8.2 Mw, 8.5 Ms, M 8.6 [1][2] |
| Epicenter | 60°00′N 140°00′W / 60.0°N 140.0°W |
| Max. intensity | MMI XI (Extreme) |
During September 1899 there was a series of severe earthquakes in the region around Yakutat Bay in Alaska. The most powerful of these occurred on September 3 and September 10 at about noon, local time. The area was sparsely populated and no fatalities were recorded, but the earthquakes were notable for the degree of elevation recorded, up to 47 feet, and for the effects on the glaciers in the region. Fieldwork on the effects of the earthquake was carried out between 1905 and 1910, and a summary report was published in 1912.[3] The September 3rd large shock's magnitude is debated, but it ranges from 8.2–8.5.[1][2] The second earthquake on September the 10th was also a comparably large shock, with magnitudes ranging from 8.2–8.6.[1][2]
- ^ a b c McCann, William (1980). "Yakataga gap, Alaska: Seismic history and earthquake potential". Science. 207 (4437): 1309–1314. Bibcode:1980Sci...207.1309M. doi:10.1126/science.207.4437.1309. JSTOR 1683431. S2CID 128624810. Retrieved 3 July 2022.
- ^ a b c Coffman, Jerry L; von Hake, Carl A. (1970). "Earthquake History of the United States". Publication. United States Department of Commerce/Department of the Interior: 108. Publication 41-1.
- ^ Tarr, Ralph Stockman; Martin, Lawrence (1912). The earthquakes at Yakutat Bay, Alaska, in September, 1899. US Geological Survey Professional Paper No 69. Washington DC: Government Printing Office.