By Jeffrey T. Freymueller, Peter J. Haeussler, Robert L. Wesson, Göran Ekström
Published via the yank Geophysical Union as a part of the Geophysical Monograph Series.
This multidisciplinary monograph presents the 1st sleek integrative precis enthusiastic about the main dazzling lively tectonic platforms in North America.
Encompassing seismology, tectonics, geology, and geodesy, it comprises papers that summarize the nation of data, together with history fabric for these unusual with the zone; deal with international hypotheses utilizing info from Alaska; and attempt vital international hypotheses utilizing info from this region.
It is geared up round 4 significant themes:
- subduction and nice earthquakes on the Aleutian Arc,
- the transition from strike slip to accretion and subduction of the Yakutat microplate,
- the Denali fault and similar buildings and their function in accommodating everlasting deformation of the overriding plate, and
- regional integration and large-scale versions and using facts from Alaska to handle vital international questions and hypotheses.
The book's ebook close to the start of the nationwide technology Foundation's EarthScope undertaking makes it in particular well timed simply because Alaska could be the least understood quarter in the EarthScope footprint, and curiosity within the sector will be anticipated to upward push with time as extra EarthScope facts turn into available.
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Additional resources for Active Tectonics and Seismic Potential of Alaska
With a convergence rate in excess of 40 mm/yr, if the convergence along the entire St. Elias orogen (the Yakataga segment of Figure 1b) is taken up on a single thrust fault, then the slip deficit since 1899 is again sufficient to produce an M ~ 8 earthquake if the entire segment ruptured at once. , 2003]. The fault segment to the west of the 2002 rupture could be long enough to rupture in a similar-sized earthquake in the future. , 2008]. However, even if the slip rate is only a few mm/yr, less frequent large earthquakes may be possible on this stretch of the fault, and paleoseismic investigations now underway may shed much more light on the potential of this part of the Denali fault system.
2006] proposed that the region of the SSE is part of a Figure 16. Time series for several sites in the region on the 1998– 2000 slow-slip event in Cook Inlet. Sites are shown from north to south, Talkeetna (TLKA and TALK), Palmer (ATWC/ATW2 and REED), and Anchorage (CMJV). 5, based on CMJV) and the time of the 2002 Denali Fault Earthquake are shown by vertical lines. transition from a fully locked to a fully creeping portion of the interface, and that it fails repeatedly in SSEs, so that at the time of a large earthquake the shear stress on this part of the interface is very low in comparison to the main asperity updip of it.
2006] Elliott et al.  Block velocities are specific either by angular velocities in degrees per million years (Bering and SOAK), or linear velocities relative to North America (Yakutat and Fairweather). A positive angular velocity represents a clockwise rotation. The Bering plate angular velocity is corrected for a unit conversion error in the original publication. 34 15 Years of GPS in Alaska rates of 12–13 mm/yr (with uncertainties of 2–4 mm/yr) at sites near the eastern part of the central Denali fault, and Mériaux et al.