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Tree rings show evidence of droughts, floods along Potomac River
Tree rings in the Potomac River watershed show evidence of severe droughts and floods over the last 350 years – and scientists can pinpoint the years of those events well enough that they align with writings from people that include Thomas Jefferson.
The findings, published earlier this month in the journal Water Resources Research, could help water managers predict water shortages and floods in Washington, D.C.
“We’ve got these Jefferson quotes and other qualitative records – we have somebody saying the drought was really bad,” said Jim Stagge, lead author of the paper and an assistant professor of civil, environmental and geodetic engineering at The Ohio State University. “But as an engineer, the next question is, how bad was it in terms of numbers? That’s what we wanted to find out. Because if we know how bad it was, we might be able to predict how bad it could be in the future.”
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ALEXANDRIA, Va. The 2020 edition of the
International Wood: The Guide to Applications, Sources and Trends (IW 2020) focuses on responses to Covid-19 from new sourcing methods to virtual showrooms and all points along the supply chain.
The publication also highlights the latest applications from enhancing acoustics in theaters, hand-crafted fly-fishing nets, luxury beach resorts and more. The International Wood Products Association has unveiled its latest issue in both a hybrid print and an innovative virtual publication.
“In order to be successful in this rapidly changing Covid-19 world, you must be nimble and meet the customer where they are. Today that means at their remote workplace. Those who can innovate will thrive,” said Cindy Squires, IWPA’s executive director. “We’re especially proud of this year’s publication, which provides insight on how suppliers and end users are navigating this health crisis while highlighting the unique ways luxurious wo
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