Flashback Friday: Seismic Stability White Paper

This paper written in-part by Rhea President Marcy Johnson in 1986, examines the slope stability under earthquake conditions of a dredged slope in Charleston, South Carolina area. Both circular failure surfaces and wedge-type failure surfaces are examined using limit equilibrium techniques. The effect of variations in river water level is analyzed. Of particular interest in this study, is the effect of the loose sand layer at the interface of the marl and the overlying soils and its influence on slope performance.

Monica Blasko 5/3/21 Monica Blasko 5/3/21

Not just a twig— a redbud revival

On Saturday April 24, Rhea volunteers converged on Moraine St Park to weed and mulch a long-neglected native species planter located at the entrance to the Ranger’s office. As we finished and were packing up, one of the Moraine St Park employees asked if anyone would like an Eastern Redbud seedling to plant at home. I have always loved this tree. That love stems from the happiness that overcomes me in the very early spring to know winter is almost over when I see the Eastern Redbud’s bright, striking pink flowers all along the PA Turnpike as I travel to our other offices on the east coast.

Monica Blasko 3/1/21 Monica Blasko 3/1/21

A long-awaited Green Card celebration!

Back in 2016, Rhea spent considerable effort to find an experienced geotechnical engineer. This endeavor was not an easy task, but we were lucky that we met Sandip Uprety. The catch was that he needed to gain U.S. residency, or he would have to return to his home country of Nepal.

Monica Blasko 10/23/20 Monica Blasko 10/23/20

Ghosts and geophysics...just in time for Halloween

Last fall, our archaeological geophysics team performed a survey of lost graves at two historic cemeteries in Alexandria, Virginia. They planned to spend their time looking for coffins, but they did not expect to end up investigating a ghost story.

Monica Blasko 9/25/20 Monica Blasko 9/25/20

Rhea announces 2020 scholarship winner!

Congratulations to Patrick Ferguson, the winner of Rhea’s 2020 Scholarship!

Monica Blasko 6/1/15 Monica Blasko 6/1/15

Looking for Lost Graves

The identification of graves is an important issue at many historical cemeteries. As excavation is seldom a desirable solution to locating unmarked graves, methods of detecting burials from the ground surface can have an obvious benefit.

Monica Blasko 2/1/10 Monica Blasko 2/1/10

Characterization of Unusual Ground Fissuring in a Dry Lakebed

Ground fissuring at playa lakes is a common geohazard where differential settlement of aquifer sediments caused by groundwater extraction is considered to be the mechanism for fissure development.

“We are all connected; To each other, biologically. To the earth, chemically. To the rest of the universe atomically.”

— Neil deGrasse Tyson

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