ABEM Terrameter SAS 1000 / SAS 4000
- 98 -
14.6
DIPDIP4L + DIPDIP4S: 4-CHANNEL DIPOLE-DIPOLE ARRAY
CVES WITH 4 ELECTRODE CABLES
This combination of protocol files is intended for dipole-dipole array CVES roll-along
measurements, and has been found very useful for a variety of applications. It offers a
resolution superior to the commonly used Wenner array, and thanks to 4-channel measuring
the increased data density does not become costly in terms of increased time required in the
field. It is, however, a lot more sensitive to noise. Note that it is important to select the
protocol files in the correct order, starting with the long layout (DIPDIP4L) before selecting
the protocol for short layout (DIPDIP4S). It gives a dense near-surface cover, and a slightly
sparser measurement pattern at long electrode spacings. DIPDIP4S is designed to supplement
DIPDIP4L for the shortest electrode spacings only.
Array
type
Protocol
name
Address
file
No of
data
ORG
No of
data
UP
No of
data
DWN
Total data
for
one
layout
15
Dipole-
dipole
DIPDIP4L
LONG
383
207
-
1113
DIPDIP4S
SHORT
252
160
-
15
Total number of data points for a four-cable layout using the procedure described in this manual.
Figure 30. Data cover of DIPDIP4L and DIPDIP4S for roll-along with three full stations
(minimum electrode spacing 5 metres).
