surf beat . (a) The slow variability of the height of incoming swell due to interference among swell of nearly the same period. (b) The long-period (several minutes) change in water level along the coast due to the changing height of breakers in the surf zone.
It’s that time of year! Please consider nominating a colleague for a Paleontological Society Award or PS Fellow:
Paleontological Society Medal: The Paleontological Society Medal is the most prestigious honor bestowed by the Society, reflecting the objectives and standards of the Society. It is awarded to a person whose eminence is based on advancement of knowledge in paleontology.
The Paleontological Society is soliciting nominations for aStudent Representative to Council.
Eligibility: We encourage nominations from paleontology graduate students who are early-mid stage in their graduate programs from all backgrounds and institutions, particularly those that have historically been under-represented on the Paleontological Society Council.
Measuring river discharge under a bridge with unmanned boat and ADCP. The Remote control boat allows measurement under a large railway bridge, improving results by avoiding weed growth which can compromise ADCP discharge measurements.
An ongoing debate regarding the origin of scrape marks on ancient animal bones has taken a new turn. The marks were first thought to have been made by early hominid butchers, then by trampling, and now it’s looking like crocodiles might have been responsible, according to a recent study in Proceedings of the National Academy of Sciences (PNAS).
pyrometamorphism (py''-ro-met''-a-mor'-phism). (a) Metamorphic changes taking place without the action of pressure or water vapor, at temperatures near the melting points of the component minerals; it is a local, intense type of thermal metamorphism, resulting from the unusually high temperatures at the contact of a rock with magma, e.g. in xenoliths (Turner, 1948). Cf: igneous metamorphism. (b) "Metamorphism" caused by lightning strikes and burning coal seams.