GRCC seismometer picks up Alaska earthquake

GRCC’s seismic station (GRMI) in Calkins picked up the magnitude 7.9 earthquake in Alaska on Tuesday morning. The earthquake was located at a depth of 25 km below the sea floor, southeast of Kodiak Island in the Gulf of Alaska. A tsunamic warning was initiated for much of the west coasts of the U. S. and Canada but was cancelled a few hours later. The fault that generated the earthquake was not of the type that usually triggers a damaging tsunami. More information about the earthquake can be found on the U. S. Geological Survey’s website. The figures below show the dramatic trace of the earthquake on the GRMI record. The second image is the pulled record of the earthquake and clearly exhibits the P wave (a seismic body wave that moves through the Earth) and the L wave (a high amplitude wave that travels on the surface of the Earth). The waves arrived at the GRCC station about 7 and 23 minutes, respectively, after the earthquake in Alaska, a testament to the speed of seismic waves!

A readout of GRCC seismometer shows the Alaska earthquake.

Trace of M7.9 Alaska earthquake on GRMI

A readout from the GRCC seismometer shows the P and L waves from the Alaska earthquake.

Pulled seismogram of M7.9 Alaska earthquake showing the relative arrival of the P and the L waves.



Dental Assisting students host bone marrow donor drive in February

On February 12th and 15th, GRCC Dental Assisting students are hosting Will You Marrow Me GRCC, a bone marrow donor registration drive. Here, dental assisting students become engaged in learning about bone marrow donation – giving someone a chance to overcome life-threatening diseases like leukemia and lymphoma.

Seventy percent of patients who need a life-saving donor will not find that matching donor in their family. They must turn to the Be The Match bone marrow registry to find an unrelated donor. All it takes to join is swabbing the inside of your cheeks with a cotton swab and filling out a brief consent form. If this sounds like something you might be interested in, please consider learning more at the upcoming Will You Marrow Me GRCC event.

  • Monday February 12, 8-11am, 1st floor of the Student Activity Center
  • Thursday February 15, 8-11am, 4th floor Main

Dental assisting students hold up their left hands, which have candy rings on the ring fingers.

Condolences to friends, family of Keith Longberg

We extend our condolences to the family and friends of former Language Arts faculty member Keith Longberg, who died Dec. 21. A memorial service was held today.

Longberg was a driving force behind the Million Dollar Faculty initiative in 1984, which raised money for GRCC (then GRJC) Foundation scholarships. He was named Faculty Emeritus in 2007, and the Keith Longberg Trust Scholarship is named for him.

Keith Longberg talks to a student at a Creating Connections breakfast in 2015.

TRIO’s Summer Research Fair is today

TRIO/Student Support Services is holding a Summer Research Fair from 11 a.m. to 2 p.m. Jan. 24 in room 336 of the Student Center.

Participating programs include:

  • University of Michigan UROP Community College Summer Fellowship.
  • Michigan Technological University MICUP
  • University of Michigan School of Information
  • Van Andel Institute
  • Summer Health Professions Education Program
  • PTK/Office of Experiential Learning

Information on a variety of opportunities will be available. Stop by, learn, get involved and make a difference! Snacks will be provided.

Amanda Aguirre, Enemecia Sepulveda Presenting