One of the advantages of the ASL is high temporal resolution, making it possible to follow the migration of sources during a tremor sequence (Kumagai et al. 2011, Ogiso and Yomogida 2012).
If true, such knowledge transfers and the potential positive growth effects would mitigate some of the detrimental effects of out migration on source countries.
These results suggest that reverse knowledge flows from outward migration help mitigate negative effects of outward migration on source countries.
However, due to the high levels of uncertainty regarding the ages of the older eruptions, northward migration of the source region cannot be conclusively demonstrated.
Although its mechanism is not yet known, migration of tremor source locations may be a distinctive precursor of phreatic eruptions in general.
The migration of the source location as a function of period, regardless of the back-projection methods, has characteristics that are consistent with the expected effect of the "swimming artifact".
Segments in the isolated candidate clade E3 (3, 5, and 6) have come from the seasonal migration of the source strain, while the rest of the segments for E3 (1, 2, 4, 7, and 8) came from the local seasonal population.
A finite element subsurface flow (FEFLOW) system was utilized to construct a numerical model that can analyse and predict the migration of multi-source pollutants during groundwater pumping and drainage in the mining area.
Because the ASL method can be applied in near-real time, it may enable us to detect and track the migration of volcanic tremor sources immediately after the beginning of tremor is recognized.
This all echoes an early post here in which I interviewed Joseph Chamie, the former head of the United Nations population office, who described an extraordinarily variegated world of imploding and exploding populations, and inevitable rivers of migration and sources of conflict.
