Re: [LEAPSECS] UTC Questionnaire (fwd)

From: Ken Senior <ksenior_at_ROM.USNO.NAVY.MIL>
Date: Thu, 20 Jun 2002 11:57:55 +0000

I will remove you from the list.

Ken Senior

On Wed, 19 Jun 2002, Steven Wolfe wrote:

> Mr. Gambis,
>
> Did I receive this e-mail by accident? Or did I sign up for something on the
> internet that maybe I shouldn't have? Please adivse.
>
> Sincerely,
>
> Steven S. Wolfe
> Senior Internet Recruiter
> Toll-Free: (877) 727-9696
> Cell: (727) 804-9653
> Fax: (727) 631-0298
> E-mail: Steven.Wolfe_at_StaffMastersUSA.com
>
> StaffMasters USA
> http://www.StaffMastersUSA.com
> Harrisburg, PA (717) 703-3200
> Philadelphia, PA (610) 280-6150
>
> Subj: [LEAPSECS] UTC Questionnaire (fwd)
> Date: 6/19/2002 3:23:14 PM Eastern Daylight Time
> From: <A HREF="mailto:Markus.Kuhn_at_CL.CAM.AC.UK">Markus.Kuhn_at_CL.CAM.AC.UK</A>
> Reply-to: <A HREF="mailto:iers_at_hpopa.obspm.fr">iers_at_hpopa.obspm.fr</A>
> To: <A HREF="mailto:LEAPSECS_at_ROM.USNO.NAVY.MIL">LEAPSECS_at_ROM.USNO.NAVY.MIL</A>
> Sent from the Internet (Details)
>
>
>
> Perhaps of interest here as well ...
>
> Markus
>
> ------- Forwarded Message
> Date: Mon, 27 May 2002 17:29:10 +0200 (METDST)
> From: iers_at_hpopa.obspm.fr
> Message-Id: <200205271529.RAA02110_at_hpopa.obspm.fr>
> Subject: UTC Questionnaire
> Mime-Version: 1.0
> Content-Type: text/plain; charset=X-roman8 (ouch!)
> Content-Transfer-Encoding: 7bit
>
>
> Subject: Questionnaire regarding the use of UTC
>
> Dear colleague
>
> We are addressing the attached questionnaire to users of Bulletin C and/or D
> in order to survey opinion concerning a possible redefinition of UTC.
>
> UTC (Coordinated Universal Time) is computed from TAI by the introduction of
> leap seconds such that UTC is maintained within 1 second of UT1. Since 1972,
> these leap seconds have been added on December 31 or June 30, at the rate of
> about one every 18 months. The relevant bulletins are:
>
> > Bulletin C: Announcement of the leap seconds in UTC.
> > Bulletin D: Announcement of the value of DUT1 truncated at 0.1s for
> transmission with time signals.
>
>
> Recently, some communities linked to telecommunications and navigational
> systems have proposed a revision of the definition of UTC to avoid the
> discontinuities due to the intermittent leap seconds.
>
> The object of our survey is to find out the strength of opinion for
> maintaining or changing the present system within Bulletins C and D users.
>
> We would also like to know your interests and needs, current and future.
>
> I apologize if you receive this questionnaire twice. Thank you for devoting
> some of your time to this important topic.
>
>
> Daniel Gambis
> Head
> Earth Orientation Center of IERS
>
> =============================================================================
>
>
> Please return this form by 30 June 2002
> to the IERS Earth Orientation Center: iers_at_obspm.fr
>
> Thanks for your time and attention.
>
>
> Mark your answer with a X [X] and add any comments.
>
>
> 1 - Your identification
> Name :
> Institute:
> Adress :
> e-mail :
>
> 2 - Field of activity
> Time [ ]
> Telecommunication [ ]
> Astronomy/Astrophysics [ ]
> Geophysics [ ]
> Space sciences [ ]
> Geodesy [ ]
> Navigation [ ]
> Other? What? [ ]
>
> 3 - Are you satisfied by the current UTC determination method with leap
> second adjustements?
> YES [ ]
> NO [ ]
>
>
> 3-1 if YES
> Is the present forecast time (6 months in advance) of the occurence
> of
> a leap second sufficient. If not would you suggest another time
> delay?
> 1 year or more?
>
> 3-2 if NO
> Why ?
>
> 4 - Do you think it would be better to change the determination method of
> UTC?
> YES [ ]
> NO [ ]
> NO OPINION [ ]
>
> 4 -1 If YES, which alternative solution would you favour?
> a. No leap second [ ]
> a.1 UTC without further leap seconds [ ]
> a.2 Use TAI [ ]
> b. Increase tolerance for |UT1-UTC| [ ]
> c. Smooth over leap second step [ ]
> d. Redefine the second [ ]
> e. Some other possibility ? [ ]
>
> 4-2 If NO for 4, why?
>
> 5 - Other comments regarding the determination or operation of UTC?
>
>
> 6 - This question concerns Bulletin D users (DUT1 with 0.1s accuracy).
> Is the present Bulletin D appropriate ?
> YES [ ]
> NO [ ]
> If NO, why?
>
> If NO, would you prefer a more frequent and refined estimation?
> With what accuracy?
>
>
>
> END OF THE QUESTIONNAIRE
>
>
> ------- End of Forwarded Message
>
>

--
 Dr. Ken Senior                                       ///,        ////
 Earth Orientation Department                         \  /,      /  >.
 U.S. Naval Observatory                                \  /,   _/  /.
 ksenior_at_usno.navy.mil                                  \_  /_/   /.
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Received on Thu Jun 20 2002 - 05:04:08 PDT

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