TEACHABLE MOMENT: tracking the weather…. ice, ice, baby.

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Here is my in query for the day – will I be able to see this shift and the barometric pressure and the increase in the winds on my educational seismograph?

Yesterday, Spring, Texas, was issued a winter weather advisory warning of impending high winds, precipitation (sleet/rain/snow), and significantly lower temperatures.

 Here is Tuesday, January 16th at 02:25 p.m. CST

 

* Seismic data provided by TXESP, and weather image courtesy of Spring Happenings.

 

TEACHABLE MOMENT: tracking the weather

WATCH the Earth move LIVE

Today, Spring Texas, was issued a winter weather advisory warning of impending high winds, possible precipitation, and significantly low temperatures.

Here is my in query for the day – will I be able to see this shift and the barometric pressure and the increase in the winds on my educational seismograph? Let’s watch and see. Here is Monday, January 15th at 8:52 a.m. CST

* Seismic data provided by TXESP, and weather image courtesy of Spring Happenings.

 

TEACHABLE MOMENT: are these the “same” images?

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Last night, 14Jan2018, a LARGE magnitude 7.2 Peruvian earthquake was forefront in the shaking.  The event occurred at  09:18hrs UTC (03:18 am CST) and had a focal depth of ~36km deep.  No tsunami warning was issued. Three Raspberry Shake stations: RAD87 in Spring, TX, RAC22 in Oakton, VA and R0EF8 in Boston, MA, recorded this large seismic event.  Below is a comparison of these three stations*.  Why do they appear slightly different?

1401018_0918_extract_PeruCOMPARErshakes* Data provided by K.Fink, J. Pulli and A. Kafka, image courtesy of A. Kafka

In the coming months, we plan to bring forth a new inquiry-based investigation to compare and quantify the differences we observed between the Raspberry Shakes recorded images and the same events observed on an EQ-1 educational seismograph.  Below is a sample of the SAME M7.2 Peruvian earthquake recorded on a Raspberry Shake (top) and at an nearby EQ-1 educational seismograph (bottom)**

1401018_0918_extract_PeruCOMPAREeq1toRS**Data and images courtesy of A. Kafka

 

 

 

 

M7.2 in – Rocking the World, Again.

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When one tectonic place moves, and stress/energy is released, it can be generally assumed that its been trrnsferred to a new region.  Last night, 14Jan2018, a LARGE magnitude 7.2 Peruvian earthquake was forefront in the shaking.  The event occurred at  09:18hrs UTC (03:18 am CST) and had a focal depth of ~36km deep.  No tsunami warning was issued.

At Station E1TX, we recorded the following images using an EQ1 educational seismograph:

 

 

 

Rocking the World – M7.6 in Honduras

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The Earth continues to ring, like a bell, after the HUGE magnitude 7.6 (Mww, mb) Honduras earthquake.  The event occurred at 10Jan2018 02:51hrs UTC (8:51 pm CST) and had a focal depth of ~10km deep.  A tsunami warning was issued for parts of the Carribean Sea and Gulf of Mexico. 

Scientists are eager to study the event in detail, but we also focus on the affects on human injuries and socio-economic damages.  Scientists and engineers strike a balance between technical inquiries and natural disasters.  At Station E1TX, we recorded the following images using an EQ1 educational seismograph:

 

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The BIG ONE is missing??

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At 18:03hrs UTC, a magnitude M6.5 earthquake shook the Earth near the Bouvet Islands.  The focal depth was ~15kms, about 118 pol deg away, and occurred near a triple junction plate boundary (see map below).  WHY DIDN’T station E1TX record this event (assuming all wave phases)?  Hypothesis: the epicenter (blue dot) was ~118 pol deg was in the P-wave shadow zone – epicentral distances 104 to 140 degrees from the recording station.  If we examine the seismogram closely, it’s possible to interpret a PS wave phase, however no other confident interpretations have been made by the station’s operator.

QUESTION:  Are “missing” wave phases not recorded? did not arrive at location? does it matter?

 

 

Let it Snow, Let it Snow, Let it Snow (and record it, please)

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Once or twice in a calendar year Houston will receive snow – although most non-Houstonians find that statement incredulous.  We have proof! – observations and data measurements are necessary to promising young scientists.  The snow began to fall rapidly in Spring, TX at 9:17 pm CST (03:17hrs UTC).  The red arrow indicates when the first flakes began to fall.  The second image was taken at 07:00 am CST (13:00hrs UTC).

Not so “Still”water, M4.2 earthquake

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Did you feel it?  A small – to –  moderate earthquake M4.2 occurred at bedtime (10:26pm CST) or 04:26hrs UTC.  The focal depth was a very shallow  3.3 kms.  The epicenter is approximately 6.4 polar degrees (or 482 miles) away from Station E1TX. No major damages or injuries have been reported at this time. The map, below, is an interpretation of the intensity experienced by citizens.  The seismogram shows a distinct “P” wave arriving  first followed by the much higher amplitude “S” wave.

To read more about this event, please CLICK HERE.