pation and we can't really just ignore the three-dimensional component of it
and for the work I'm going to show you I actually work on earthquakes at an
earthquake sequence that was triggered by another earthquake very, very far away
and so not only do I have a three-dimensional problem but I also
have a four dimensional problem because time is also another component of it so
this is a pretty typical way that you will see seismologist display
earthquakes so to orient you on the top we have that 2d map projection and so
right here this black line is the trench you've got the incoming plate with the
overriding plate I've got some triangles on here those are my different
seismometers I've got ocean bottom seismometers and the inverted triangles
and some land-based stations right here along the Marianas island arc in the
western Pacific and these dots here represent different earthquakes and so
on the bottom you also have a depth slice or a cross section and this shows
you've got a slab surface right here and you've got the different depths of your
earthquakes here but this is gonna summarize this entire lateral extent and
so when you're trying to differentiate a cluster say up here you can't really
differentiate it that well up here and so like I said I work with triggered
earthquakes so there's a temporal aspect to it so what we have right here is me
trying to explain how that temporal aspect works so this left figure here is
36 hours of events before our triggering event and then this figure over here is
the 36 hours after the triggering event and as well I wanted to point out I do
have some red dots where I try to differentiate a certain events that
happened within the first hour after the event happened and so you can see
there's a cluster at the top here and this is the one that I want to point out
but these maps I'd have to make several panes of them if I wanted to see it show
you kind of a time sequence and that gets kind of cumbersome so while we do
pretty good to show our in-space correlation
it's not really great for in time
so one way we can think about in time is when
we look at the seismograms themself and so these are both on the same station
showing vertical displacement in the same station and on the top I have a low
frequency filter on that and that low frequency filter is going to illuminate
that tel-a-seismic event coming from a distance of five thousand kilometers
away and so by the time it's reached my station it will have lost all that high
frequency energy and so you just see this low-frequency kind of a loser
wiggle to it and when I look at that same hour and a half the same station
everything's the same and free filter it at a higher frequency what I can see is
these events or events that are happening in my local area because they
have not lost that high frequency energy and so what I want to point you to is
this is my S wave arrival for the fir...., for the tel-a-seismic earthquake with my
rayleigh wave here and then right after that event it'll go you see a burst of
different earthquakes here and so this does a good example or a good job of
trying to explain the temporal correlation between these two things but
we really don't know where these things are we'd have to locate them or I'd have
to tell you it doesn't really do a good job visualizing it and so we're thinking
about not only communicating it to other scientists but communicating it to
classrooms and the public this is a little bit hard to grasp
so the Fawcett laboratory okay the Fawcett laboratory at Washington
University has been developing some applications with augmented reality and
this is very similar to virtual reality but you're able to see through and see I
do it's like kind of a mixed reality and so this way you kind of have like a
hologram in front of you and what's nice about this is a little more intuitive
and you can use it to share your experience with other people in the
classroom or in a public setting so here I have my collaborator Martin Pratt and
he has this kind of visor looking thing on there that is the microsoft holo-lens
which helps with this holographic presentation so when it kind of zooms
back out you'll see this purple thing here that is that subducting slab that's
a Mariana slab there and then as he's playing this temporarily back and forth
you can see the earthquakes pop up and if we add sound you can actually hear
sound to this so you'll hear the earthquakes kind of arriving so let play
it one more time so here you also got your seismic stations on the top and so
you see the earthquake starting to pop up and he can look around that cluster
and he can really see that cluster highlight right there
and so because getting a bunch of these holo lenses can be pretty expensive and
maybe a barrier they've also worked to right here Hannah has the hololens on
but Martin's actually recording this and interacting with it with an iPhone and
so you can have iPhones and androids actually sync up together so they're
seeing the same things you could have a professor who is controlling the
animations etc and you can have students be able to actually explore a subduction
zone together and so here in this one you can actually see the two events that
triggered my earthquakes over there in the distance so you could literally walk
from those events over to the Marianas subduction zone you see the events now
he's colored them in different colors to indicate before and after the triggering
event as well and so she can interact and and play
through these events and he's able to watch what she's doing and so this is
something actually you guys can do here the Fossett Laboratory has released two
iPhone apps geo explorer they also use this for they use high resolution
photogramy of outcrops so you can bring those field trips into the lab so the
geo explorer has a bunch of outcrops not only from Earth but they can you can
walk on Mars you can walk on the moon as well and then seismicity AR it's similar
to this one except for its using the USGS Earthquake catalog so you can walk
around the USGS as earthquakes just like Hannah is right here and so I highly
recommend checking out virtual planet booster video the URL down at the end
and if you have any questions feel free to connect with me on Twitter seismo
Amanda any time and thank you