The strong-migration limit follows from a separation of timescales: going back in time, migration spreads the lineages on a faster timescale, whereas genetic drift causes lineages to coalesce on a slower one.
On short timescales (months), as expected, the greatest sensitivities are to local disturbances, but as the timescales extend back to a decade and longer, the region of influence expands to occupy much of the Atlantic basin and significant areas of the global ocean, although the influence of any specific point or small area tends to be quite weak.
The fascinating thing that seems to be emerging is, as we look at … the 1,000-year 1,000-year going back timescaleslion years, other past warmingoingnts where we get these backk mudstones, we find that whatever the starting conditions, amazingly you get the same outcome.
From the CMC Markets blog: The reality of the situation is that even if the fed made a definitive announcement on the timescale for pulling back from bond purchases, any immediate market reaction would be guesswork at best – tapering does not mean an end to asset purchases.
However, previous studies of transgression regression cycles in this region at orbital timescales that extend back to the early Pleistocene are sparse, mainly because of the shortage of well-dated long cores.
"The operation went well but it's the timescale of getting it back together".
The prospect of Tiger Woods missing this entire year of competitive golf remains a live one, with the 40‑year‑old still refusing to offer any likely timescale for his return from back surgery.
"In terms of ranking, they don't sit alongside the Worlds and the Olympics, so it will fall very nicely in terms of her getting back and the timescale of going to Rio to defend that London Olympics gold.
"But by the time we play on Monday it will be nearly two weeks and for a grade one strain, experts who know better than I do say it is perfectly reasonable to be back playing in that timescale.
"I don't have a timescale for when I will be back playing really.
