The relatively early activity is quickly becoming the norm, with rising temperatures making the fire season longer than it used to be.
Not exact matches
Early exit
activity is beginning to materialize — 13 exits were recorded in 2015, up from just three in 2014 — but most transactions have been
relatively small in scale.
Activity is thus likely to have held up at a
relatively high level in the
early part of 2004, but is expected to decline thereafter.
However, once they die their test can be transported by water, wind and biological
activity (other critters) to different water depths, sometimes shallower, from that at which they lived and are then deposited Moreover, foram tests are
relatively robust, they survive in sediments and so if
earlier sediments are eroded, and the resulting sediment redeposited, any contained forams will be too.
For example,
relatively few Atlantic hurricanes were observed in the 70s, 80s and
early 90s, but there was considerable
activity during the 40s, 50 and
early 60s.
You aren't thinking about the warming period
early last century, because we know it was a
relatively brief period, and so lacked huge significance, and was caused by a combination of CO2 emissions, high solar
activity and low volcanic
activity and the later two factors haven't been apparent since the 1970's modern warming period.