[Geomag-daily] [EXTERNAL] RE: [Ext] Re: Daily bad Total Field Values at Deadhorse Observatory

[Finn, Carol]

Perhaps you could rephrase the question to the T-pad operator and ask her
if she has a log of activities that have been going on in the building
closest to our observatory building.

Carol

Carol A. Finn
Geomagnetism Group Leader
USGS/Geologic Hazards Science Center
PO Box 25046, MS 966
Denver, CO 80225
Tel:  303-273-8475
Fax:  303-273-8506
Mobile:  303-618-0637
cafinn at usgs.gov
http://geomag.usgs.gov


On Wed, Sep 26, 2018 at 5:04 PM, Sauter, Edward <esauter at usgs.gov> wrote:

> What are the odds of you SLB people randomly looking at the 30 minute
> window, after 1300 UT, in an attempt to catch it as it is happening.  Then
> make a 'mad dash' (obeying the posted speed limits of course), to see if
> you can see what is going on in the vicinity of the observatory.
>
> It was at it again today from around 1956 through 2027 UT.
>
> On Wed, Sep 26, 2018 at 4:42 PM Adam Aucoin <AAucoin at slb.com> wrote:
>
>> Good evening,
>>
>>
>>
>> I spoke with the T-Pad operator about the disruptions and the times. She
>> told me there has been no activity going on at T-Pad.
>>
>>
>>
>> Kindly instruct what should be our next step.
>>
>>
>>
>> Thanks,
>>
>>
>>
>>
>>
>> Schlumberger-Private
>>
>> *From:* Karen Remick <kjoutflow2004 at yahoo.com>
>> *Sent:* Wednesday, September 26, 2018 12:44 PM
>> *To:* Adam Aucoin <AAucoin at slb.com>; Bonnie Baker <BBaker14 at slb.com>;
>> Brian Olson <bolson at slb.com>; Kory Simpson <KSimpson at slb.com>; Lisa
>> Tschosik <LTschosik at slb.com>; Ryan Kauffman <RKauffman at slb.com>; Sauter,
>> Edward <esauter at usgs.gov>; Brandon Horton <BHorton4 at slb.com>
>> *Cc:* GS-HAZ Geomagnetism Federal Employees <
>> geomag-daily at geohazards.usgs.gov>
>> *Subject:* [Ext] Re: Daily bad Total Field Values at Deadhorse
>> Observatory
>>
>>
>>
>> Ed,
>>
>> Maybe we can get some logs from the T-pad operator as to when people were
>> on the pad. Finding out who was there gives us a chance to find out what
>> exactly they were doing. If no-one was on the pad, that tells us something
>> too.
>>
>> Karen
>>
>>
>>
>> On Wednesday, September 26, 2018, 7:18:29 AM AKDT, Sauter, Edward <
>> esauter at usgs.gov> wrote:
>>
>>
>>
>>
>>
>> All,
>>
>> On a daily basis, starting at at random hours, there are a lot of missing
>> 1 second F values.  Carol Finn first noticed the problem.  Not so many as
>> to corrupt our 1 minute values, but a fair number.  They seem to be
>> concentrated over a 1 -3 hour period, and in the later half of the UT day
>> (after 1300 during the last week or so).
>>
>>
>>
>> Whatever is causing this problem, it took September 21 off.  During this
>> day, there was on 1 bad 1 second F value.
>>
>>
>>
>> In order to see what I describing, you must view a time span of no more
>> than 30 minutes on the Geomag Plots page:
>>
>> https://geomag.usgs.gov/plots/
>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__geomag.usgs.gov_plots_&d=DwMFaQ&c=CRKael6LgVt5xjvyqPD27dPR2eKsAMw5_UGvkEk3eUY&r=sSHo8vlCBgwVcdtmYQ1J_g&m=r4q8Z46u0-EISLA3pfucOcb1F7JQ7NyaauNmKrCiShc&s=kNnSwj5fsD3ZPFeMxoqEKIMeKnnrTrHy_nnukPf9Ql8&e=>
>>
>>
>>
>> On the left side of the page, you can select an individual observatory
>> (DED, for your observatory)
>>
>>
>>
>> Also, on the left side of the page, there are 2 blocks that signify the
>> start and end time for the horizontal scale.  For example, enter a start
>> time of 2018-09-23 20:00:00, and an end time of 2018-09-23 20:30:00.
>> (within the time blocks you can edit the entry already there)
>>
>>
>>
>> After selecting this time span, you can use the Step Forward and Step
>> Back 'buttons' to shift the time span accordingly.
>>
>>
>>
>> Because of the way this happens for a period of time, and on almost a
>> daily basis, I am of the opinion this is an artificial disturbance, and can
>> be remedied.  One of the more probable causes would be welding in the
>> vicinity, but it could be something else.
>>
>> Please investigate at your first opportunity and by all means avoid
>> taking absolute observations during periods where the Total Field values
>> are being corrupted.
>>
>>
>>
>> Some statistics:
>>
>> Date
>>
>> Starting at:
>>
>> Bad 1 Second F Values
>>
>> 9/19
>>
>> 1300
>>
>> 170+
>>
>> 9/20
>>
>> 1300 UT
>>
>> 220
>>
>> 9/21
>>
>> 0100
>>
>> 1
>>
>> 9/22
>>
>> 2200
>>
>> 165
>>
>> 9/23
>>
>> 2000
>>
>> 500+
>>
>> 9/24
>>
>> 2200
>>
>> 168
>>
>> 9/25
>>
>> 2000
>>
>> 280+
>>
>>
>>
>>
>>
>> Regards,
>>
>> Ed Sauter
>>
>>
>>
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