
70-1
70.1 Introduction
Ground-penetrating radar, also known as surface-penetrating radar, geo-radar, or more commonly by
the abbreviation GPR, has seen signicantly increased acceptance as a viable near-surface geophysical
te
chnique
in re
cent
ye
ars
. e pr
actice
of em
ploying
ra
dio
wa
ves
to im
age
th
e
su
bsurface
da
tes
to wo
rk
co
nducted
on gl
aciers
in th
e
Au
strian
Al
ps
in th
e
19
20s
(St
ern,
19
29)
. Re
search
on th
e
ic
e-penetrating
ca
pabilities
of ra
dio
wa
ves
la
nguished
un
til
th
e
la
te
19
50s,
wh
en
it wa
s
no
ted
th
at
ne
wly
in
stalled
ra
dar
al
timeters
on ai
rcra
co
uld
pe
netrate
th
rough
th
e
Gr
eenland
ic
ecap
an
d
di
splay
th
e
ai
rcra’s
he
ight
ab
ove
th
e
un
derly ...