Paleotempestology.
This term is the core of UNC Charlotte professor
Scott P. Hippensteel’s research.
Though it seems a complex word, if broken down, the
meaning is simple. “Paleo” is the Greek derivation for “ancient” or “long ago.”
Tempest is defined as a storm, usually a violent one. “logy” is a Latin and
Greek root meaning “a branch of science,” or the specific study of something.
Thus, paleotempestology
means the study of ancient storms.
Scott Hippensteel focuses more specifically on
hurricanes.
Our formal records of storms and their effects upon
the environment of the world only extend approximately a century or two;
in-depth records are even younger, and the use of modern technology to record
and predict such patterns- the internet, SONAR, radar, satellites, among
others- extend, at the earliest, from the second half of the twentieth century.
This means that our understanding of patterns of
weather is severely limited. Though we see changes in our environment and can
track weather patterns over the extended period of time we have had access to these records, we cannot track macro patterns as
they extend across multiple centuries and millennia.
This becomes problematic when you look at
definitively proving claims of climate change. This leads to problems in other
areas, including but not limited to: affecting climate change policy,
implementing new energy techniques, preparing adequately for future disasters,
and predicting extended future weather patterns.
Through his studies of paleotempestology, Scott
Hippensteel thinks that he has found an answer, in a microorganism called foraminifers. Foraminifers are an
aquatic microorganism that reside in the sediment of the sea bed. When they
die, they leave small shells that can be traced through time. Think of
foraminfer fossil deposits as a form of time capsule.
Foraminfers usually reside off of the shores of land
masses. When a significant storm- say, a Level 5 hurricane- arrives, the power
of the storm whips up the sediment on the sea bed and deposits it closer to the
shore, in the bays and directly off of the land mass. They remain in this new
location and, as Hippensteel has found, can be used as indicators of large
hurricanes in the past.
Hippensteel has been collecting sediment in Onslow
Bay and other areas off of the shores of North Carolina and its Outer Banks.
After filtering through the sediment to find these foraminifer microfossils, he
can date the fossils and track significant storms through time- storms that our
records are too young to display. One can see why this finding is significant.
If one can create a map through time of significant storms, it can be compared
to our weather records. This comparison can help to see if patterns have been
consistent or if they are indeed changing with time and human development.
Unfortunately, there are difficulties. In some
areas, foraminifer deposits have been disturbed by other foraging aquatic
creatures, such as fiddler crabs. In this way, some foraminifer microfossils
are displaced and display inaccurate records.
(He's cute though, right?)
Only large storms- Category 5 hurricanes, as
mentioned before- have the strength required to move the quantities of foraminifer
fossils necessary for analysis and subsequent mapping. Therefore, even through
this method, we can only detect significant storms- leaving us blind to a
record of all ancient storms, and not just the especially destructive ones.
Though Hippensteel and his team have faced doubts
about the validity of many records, they do not doubt the potential that this
research has to affect environmental science. They have used these initial
failures as a catalyst to increasing the science of understanding hurricane
deposition and preservation. Once this area is clarified, further research can
be done in geochronology through paleotempestology.
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