[Geomag-operations] Fwd: BOU E-field 200m issue

[Carol Finn]

Sent via the Samsung Galaxy S8, an AT&T 4G LTE smartphone

-------- Original message --------
From: Brendan Geels <bgeels at usgs.gov>
Date: 5/31/18 3:34 PM (GMT-07:00)
To: GS-HAZ Geomagnetism Employees <gs-haz_geomagnetism_employees at usgs.gov>
Subject: BOU E-field 200m issue

All,

Recently Josh discovered that the 200m North-South electrode at BOU E-field
has been producing bad data for maybe about a week. The issue appeared to
be hardware related, so Ed checked on it while he was up there doing some
other work today. He found that some mooselk had chewed through a sensor
wire. Ed repaired it and the data now looks much more reasonable.
During this process, Ed had to swap the wires on amp a few times. This
caused spikes on all 4 E-field channels each time. Here are the approximate
disturbance times:
5/31/2018 20:39
5/31/2018 20:45
5/31/2018 20:46
5/31/2018 21:06


Brendan Geels
Geomag Systems Engineer
Contractor - Apogee Engineering, LLC
C: (720)315-9386
O: (303)273-8409
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