Mountain Views News, Combined Edition Saturday, April 20, 2019

5

Mountain Views-News Saturday, April 20, 2019 

Local Area 
News Briefs


Scientists Identify Millions 
of Hidden Earthquakes

Mountain Lion Naps in 
Pasadena Backyard

 Caltech seismologists 
announced Thursday they have 
identified nearly two million 
previously unidentified tiny 
earthquakes across Southern 
California occurring between 
2008 and 2017.

 The efforts, published online 
by the journal Science on April 
18, expand the earthquake 
catalog for that region and 
period of time by a factor of 
10—growing it from about 
180,000 recorded earthquakes 
to more than 1.81 million. 
The new data reveal that there 
are about 495 earthquakes 
daily occurring at an average 
of roughly three minutes 
apart. Previous earthquake 
cataloging had suggested that 
approximately 30 minutes 
would elapse between seismic 
events.

 This 10-fold increase in 
the number of recorded 
earthquakes represents the 
cataloging of tiny temblors, 
between negative magnitude 
2.0 (-2.0) and 1.7, made possible 
by the broad application of a 
labor-intensive identification 
technique that is typically only 
employed on small scales. 
These quakes are so small that 
they can be difficult to spot 
amid the background noise that 
appears in seismic data, such as 
shaking from automobile traffic 
or building construction.

 “It’s not that we didn’t know 
these small earthquakes were 
occurring. The problem is 
that they can be very difficult 
to spot amid all of the noise,” 
says Zachary Ross, lead author 
of the study and postdoctoral 
scholar in geophysics, who 
will join the Caltech faculty in 
June as an assistant professor of 
geophysics. Ross collaborated 
with Egill Hauksson, research 
professor of geophysics at 
Caltech, as well as Daniel 
Trugman of Los Alamos 
National Laboratory and Peter 
Shearer of Scripps Institution 
of Oceanography at UC San 
Diego.

 To overcome the low signal-
to-noise ratio, the team turned 
to a technique known as 
“template matching,” in which 
slightly larger and more easily 
identifiable earthquakes are 
used as templates to illustrate 
what an earthquake’s signal 
at a given location should, 
in general, look like. When 
a likely candidate with the 
matching waveform was 
identified, the researchers 
then scanned records from 
nearby seismometers to see 
whether the earthquake’s signal 
had been recorded elsewhere 
and could be independently 
verified.

 Template matching works 
best in regions with closely 
spaced seismometers, 
since events generally only 
cross-correlate well with 
other earthquakes within a 
radius of about 1 to 2 miles, 
according to the researchers. 
In addition, because the 
process is computationally 
intensive, it has been limited 
to much smaller data sets in 
the past. For the present work, 
the researchers relied on an 
array of 200 powerful graphics 
processing units (GPUs) that 
worked for weeks on end to 
scan the catalog, detect new 
earthquakes, and verify their 
findings.

 However, the findings were 
worth the effort, Hauksson 
says. “Seismicity along one fault 
affects faults and quakes around 
it, and this newly fleshed-
out picture of seismicity in 
Southern California will give 
us new insights into how 
that works,” he says. The 
expanded earthquake catalog 
reveals previously undetected 
foreshocks that precede 
major earthquakes as well as 
the evolution of swarms of 
earthquakes. The richer data 
set will allow scientists to gain 
a clearer picture of how seismic 
events affect and move through 
the region, Ross says.

 “The advance Zach Ross 
and colleagues has made 
fundamentally changes the way 
we detect earthquakes within 
a dense seismic network like 
the one Caltech operates with 
the USGS. Zach has opened a 
new window allowing us to see 
millions of previously unseen 
earthquakes and this changes 
our ability to characterize 
what happens before and 
after large earthquakes,” said 
Michael Gurnis, Director of 
the Seismological Laboratory 
and John E. and Hazel S. Smits 
Professor of Geophysics


USGS Pasadena

 California Department of 
Fish and Wildlife officers 
along with Animal Control 
carefully removed a large 
100 pound mountain 
lion Thursday from the 
backyard of a home in the 
1600 block of Fiske Avenue 
and Lake Avenue –far from 
the foothills were they 
normally roam.

 According to reports 
and Pasadena Public 
Information Officer Lisa 
Derderian, the large cat 
was seen by residents 
sleeping under a tree. 
Police along with Pasadena 
Humane Society officers 
arrived at the scene shortly 
before 5 p.m. Based on 
its sluggish behavior, the 
mountain lion may have 
been sick and looking for 
food or water according to 
Derderian. 

 The animal was sedated 
and removed from the area 
around 7:30 p.m. It will be 
evaluated for any health 
concerns and most likely 
released back into the 
forest Derderian said.

80,000 Eggs Up for Grabs at the Rose Bowl

 City officals are inviting the 
public to celebrate spring by 
hopping over to Pasadena’s fifth 
annual free Egg Bowl today, 
11 a.m.–3 p.m., at Rose Bowl 
Stadium. More than 7,000 
people are expected to attend 
and over 80,000 eggs will line 
the historic field.

 There will be three separate egg 
hunts for children up to 12 years 
old. The 11:30 a.m. egg hunt is 
the busiest and most attended of 
the day. Start times for the other 
two egg hunts are 12:45 and 2 
p.m. No registration is required 
and admission is free. Bring 
your best egg-hunting basket, 
or you can purchase a bucket 
for $3.

 Before or after the hunt, hop by 
the Egg Bowl festival featuring 
free family games, performances 
and activities, including a 
puppet show, arts and crafts, 
face painting (nominal fees 
apply), food for sale, and more. 
Scheduled exhibitors include 
Armory Center for the Arts, The 
Huntington Botanical Gardens, 
Lakeshore Learning Store, 
Options for Learning, Mission 
Renaissance Fine Art, PlayLab, 
Ronald McDonald House, 
Stratford School, Southern 
California Children’s Museum, 
Optima Family Services, New 
York Life, AM870 the Answer, 
SCRUBS Giving Society of 
Huntington Hospital and the Sri 
Lanka Foundation. Pasadena 
residents will also be able to 
register for the City’s Summer 
Day Camp programs at the Egg 
Bowl.

 Pasadena Transit is offering free 
bus rides to and from the Egg 
Bowl on Route 51, from 7 a.m. 
to 4 p.m. Route 51 buses will 
run every 22 minutes between 
7 and 10:20 a.m. and between 
2:30 and 4 p.m. Buses will run 
every 11 minutes between 10:30 
a.m. and 2:20 p.m. The Rose 
Bowl Stadium is a five-minute 
walk from the nearest Pasadena 
Transit bus stop. View the Route 
51 map and schedule at www.
pasadenatransit.net. Those who 
take Route 51 to the event can 
enter a raffle for a special prize. 
Free parking is available in Lot 
F.

 A bag check will be required 
before entering the stadium. 
Please plan accordingly; leave 
plenty of extra time before 
scheduled activities begin and 
pack light if possible.

 The Egg Bowl is sponsored 
by City of Pasadena’s Human 
Services and Recreation 
Department and the Rose 
Bowl Operating Company. 
Additional sponsors include 
the Sri Lanka Foundation 
and Pasadena Recreation and 
Parks Foundation. For more 
information about this year’s 
Egg Bowl, visit: cityofpasadena.
net/egg-bowl or call (626) 744-
6530.

City to 
Support 
Denim Day

 City of Pasadena employees 
are set to support Denim Day 
on Wednesday by wearing 
jeans as part of Sexual Assault 
Awareness Month –let us 
explain.

 For the past 20 years, Peace 
Over Violence has run its 
Denim Day campaign on a 
Wednesday in April in honor 
of Sexual Assault Awareness 
Month. The campaign was 
originally triggered by a ruling 
by the Italian Supreme Court 
where a rape conviction was 
overturned because the justices 
felt that since the victim was 
wearing tight jeans she must 
have helped her rapist remove 
them, thereby implying 
consent. The following day, 
the women in the Italian 
Parliament came to work 
wearing jeans in solidarity 
with the victim. Peace Over 
Violence developed the Denim 
Day campaign in 1999 in 
response to this case and the 
activism surrounding it. Since 
then, wearing jeans on Denim 
Day has become a symbol 
of protest against erroneous 
and destructive attitudes 
about sexual assault. In this 
rape prevention education 
campaign, community 
members, elected officials, 
businesses and students 
are asked to make a social 
statement with their fashion by 
wearing jeans on Denim Day 
as a visible means of protest 
against the misconceptions 
that surround sexual assault.

 “It takes cross-sector 
collaborations and educational 
awareness campaigns, such as 
Denim Day, to bring attention 
to this issue that continues 
to plague our society, and 
ensure we are all informed and 
equipped to combat sexual 
violence. We are thankful 
to Patti Giggans and her 
wonderful team at Peace Over 
Violence for helping create a 
society free of violence,” says 
Norma Fernandez, chair of 
Pasadena’s Commission on the 
Status of Women.

 Pasadena homeowner 
shoots Intruder

 A burglar in unincorporated 
Pasadena learned then 
hard way Thursday after a 
homeowner shot him the 
upper body as he broke into a 
house where the man and his 
two kids were home. 

 The man warned the burglar 
he had a gun, the suspect 
refused to leave. 

 The shooting was reported 
just before 3:30 p.m. in the 
3600 block of Grayburn Road. 

 According to deputies they 
had first gotten a call about a 
burglary at another home in 
the area. A woman was also 
home in that case and the 
intruder fled. They said the 
suspect was likely the same. 

 The homeowner legally 
owned the gun they said. 

Schiff Honors 2019 Women of 
the Year Including Pasadena 


Onoye pictured sitting bottom row far right

 

 At a luncheon Tuesday in 
Echo Park, Rep. Adam Schiff 
honored 13 inspiring women 
from communities in the 28th 
Congressional District.

 “Schiff said “It was an honor 
to recognize their outstanding 
work in the 28th District. These 
women have worked to found or 
support a myriad of charitable 
organizations and given so 
much of themselves to improve 
the common good. They are all 
pillars of our communities and I 
thank them for their invaluable 
service.”

 He continued, “I would like to 
recognize a remarkable woman, 
Kathy Jane Onoye, Ed.D of 
Pasadena.”

 Dr. Onoye admirably served 
the Pasadena Unified School 
District for over four decades, 
beginning in 1971 as a classroom 
teacher at Audubon Primary 
School, then serving as a 
Principal, Curriculum Resource 
Teacher and Mathematics 
Resource Teacher at Willard 
Elementary School, until her 
retirement in 2014 as Executive 
Director, Elementary, K-6 & K-8 
Curriculum and Instruction 
for PUSD. In addition, Kathy 
was a Master Teacher for USC, 
a Master Teacher for Pacific 
Oaks College, has conducted 
many educational conferences 
and workshops, and was 
instrumental in helping Willard 
Elementary School achieve its 
International Baccalaureate 
status.

 Dr. Onoye has served on 
include the Association 
of California School 
Administrators (ACSA), the 
Association of Pasadena School 
Administrators, Member of 
PUSD’s Technology Committee, 
and a Member of the Advisory 
Committee for Professional 
Growth for the Commission 
on Teacher Credentialing, 
State of California. Kathy’s 
past and present community 
involvement includes serving on 
the boards of the Boys and Girls 
Clubs of Pasadena, Young and 
Healthy, Pasadena Educational 
Foundation and Delta Kappa 
Gamma, as a member of the 
Greater Pasadena Japanese 
American Citizens League 
and the San Rafael Library 
Associates, leadership positions 
at All Saints Episcopal Church 
and as a volunteer at Huntington 
Memorial Hospital.

Cinco De 
Mayo Fiesta

 The Cinco de Mayo fiesta 
at Pasadena Senior Center, 
85 E. Holly St., will be a 
fun affair with plenty of 
Mexican flair Saturday, 
May 4, from noon to 2 
p.m. Doors will open at 
11:45 a.m.

 Vibrant decorations will 
adorn the Scott Pavilion 
as guests enjoy delicious 
Mexican cuisine, and 
dancing by Sol de Fuego 
Folklorico Dancers.

 The cost is only $10 for 
members and $12 for non-
members of all ages. Bring 
your familia and amigos! 
Prepaid reservations are 
due at the Welcome Desk 
or the Pasadena Senior 
Center website no later 
than Thursday, May 2. 

 For more information visit: 
pasadenaseniorcenter.org 
or call (626) 795-4331.


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