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 1 
 on: January 17, 2019, 09:08:51 PM 
Started by Friend Weller - Last post by Kenton E. Spading
Friend,
Thank you for posting this.   It is very interesting.  The cited dissertation by Teresa Wilson (now at the U.S. Naval Observatory) is here.
https://digitalcommons.mtu.edu/etdr/697/

I extracted the following from the sky and telescope link.

Ms. Wilson suggests that typical sunrise and sunset estimates are often off by 1 to 5 minutes.  Her dissertation delves into the assumptions navigators and others make about the refraction of the sun’s light through earth’s atmosphere.   Most sources today assume an angle of refraction at the horizon of 34 arc-minutes although she found references to this dating back centuries.  Excerpts from the article.

Using a single refraction angle doesn’t account for different meteorological conditions from location to location.  Nor does this approach take into account how the observer’s altitude might change things.  Summer showed the largest discrepancies in sunrise-sunset predictions, probably due to the pronounced refractive effect that the large temperature difference in the atmosphere has during those months.

There are many factors involved but generally Ms. Wilson discovered that sunrise and sunset times cannot be reliably predicted to better than 2 minutes.

Two minutes might sound inconsequential, but as Ms. Wilson noted, if GPS fails, sailors will use celestial navigation (and before GPS e.g. Noonan they all utilized celestial).

Quoting Ms. Wilson; “Most sailors will tell you that they can get their position with celestial navigation to within 1 nautical mile. But if part of that calculation involves sunrise-sunset 1 minute of time turns into 15 nautical miles of error."

A better understanding of how the atmosphere bends light on the horizon would affect moonrise predictions, too.

I did not find a reference to how refraction might be affected by a volcanic eruption/ash/floating pumice which occurred at Rabual, Papua New approximately 1 month before the Earhart flight. 



 2 
 on: January 17, 2019, 03:32:50 PM 
Started by Kenton E. Spading - Last post by Kenton E. Spading
Martin,
Thank you for your kind assistance.

 3 
 on: January 17, 2019, 03:15:09 PM 
Started by Ric Gillespie - Last post by Ric Gillespie
https://www.memorabletv.com/episodes/is-amelia-earhart-alive-a-mysteries-at-the-museum-special-travel-wed-23-jan-2019/

(sigh)

They approached us last summer.  We elected not to participate.

 4 
 on: January 17, 2019, 02:26:31 PM 
Started by Kenton E. Spading - Last post by Martin X. Moleski, SJ

The Search for Amelia Earhart: Covering the 2017 Nikumaroro Expedition

https://www.archaeologychannel.org/tac-events/international-film-festival/218-archived-festival-pages/tac-fest-2018-pages/2685-earhart-symposium
 
Festival/Conference Registration Forms:

https://www.archaeologychannel.org/images/documents/conference/2019/ConfRegistrationForm2019.pdf

Film Festival:  Films from 2018 are linked here:

https://www.archaeologychannel.org/tac-events/international-film-festival/135-archived-festival-pages/2620-film-festival-2018
 
Information on the 2019 Festival and the selected films is linked here:

https://www.archaeologychannel.org/events-guide/tac-international-film-festival/international-film-festival
 
Conference on Cultural Heritage Media:  Conference information is linked here:

https://www.archaeologychannel.org/events-guide/tac-conference-on-cultural-heritage-media
 
For further questions on registration contact Archaeological Legacy Institute (ALI) at:
conference@archaeologychannel.org
or call 541-345-5538

I have fixed the syntax of all of the links in the excerpt above.

"The Search for Amelia Earhart: Covering the 2017 Nikumaroro Expedition."

Festival/Conference Registration Forms

Film Festival:  Films from 2018.

Information on the 2019 Festival and the selected films.

Conference on Cultural Heritage Media:  Conference information.

For further questions on registration contact Archaeological Legacy Institute (ALI) at:

conference@archaeologychannel.org

or call 541-345-5538

 5 
 on: January 17, 2019, 08:46:46 AM 
Started by Friend Weller - Last post by Friend Weller
An interesting article that could shed some light on the difficulties Fred may have had to deal with in shooting his sunrise sight on the morning of 02 July 1937 and his subsequent navigational calculations.

https://www.skyandtelescope.com/astronomy-news/we-dont-really-know-when-the-sun-rises/

 6 
 on: January 17, 2019, 07:36:48 AM 
Started by Kenton E. Spading - Last post by Ric Gillespie
TIGHAR will not be participating in the symposium but I've told Kenton that we'll be happy to publish anyone’s research that adds to the understanding of the events surrounding the Earhart disappearance.

 7 
 on: January 16, 2019, 06:52:55 PM 
Started by Kenton E. Spading - Last post by Kenton E. Spading
Hello,

I am chairing the 2nd Annual Amelia Earhart-Fred Noonan Symposium in Eugene, Oregon again this year at the Eugene Hilton.   The Symposium will occur on either Thursday, May 2, Friday, May 3 or Saturday, May 4, 2019.  The exact day will be determined soon.

This symposium is a component The Archaeology Channel (TAC) Conference on Cultural Heritage Media which is itself a key activity of the 16th Annual TAC International Film Festival.  The Archaeology Channel (TAC) is a streaming media website brought to you by Archaeological Legacy Institute (ALI) which is a 501[c][3] nonprofit. 

Please consider attending as a presenter.   The Deadline for submitting an abstract for a presentation or forum topic is January 31, 2019 (midnight).
Your presentation does not have to be ready by then.  Forward a 150-words-or-less description of the topic you want to present.  The registration fee for presenters is $100 which is also due on January 31.   If you want to submit an abstract email me directly at KSpading@Comcast.net.  I will forward an abstract submission form to you.

Many of you can speak to a Earhart-Noonan topic or have ideas for a forum topic.   The symposium is held to further the development of our understanding of Ms. Earhart’s and Mr. Noonan’s lives, contributions, disappearance and influences on popular culture.  The symposium presents a wonderful opportunity for Earhart-Noonan devotees and researchers to get together, network and compare notes!  This Conference is especially well designed for media-related presentations.

Note the wide variety of topics at this link which were presented last year ranging from tongue-in-check humor such as:

“Buzzards or Boosters? Fiction Writers and the Amelia Mystery”
to Technical:
“Reassessment of Acute Environment Impacts on Earhart’s Final Flight”. 

[url]https://www.archaeologychannel.org/tac-events/international-film-festival/218-archived-festival-pages/tac-fest-2018-pages/2685-earhart-symposium[url]
 
The Earhart-Noonan Symposium will be listed in conference brochures as: “The Search for Amelia Earhart and Fred Noonan II: Updates and New Developments.”  Symposium papers will be presented in the morning and afternoon on symposium day.  In 2018 we had a full morning and afternoon of interesting AE-FN related presentations.
 
I sincerely hope you can attend this year.  Questions are welcome.
 
The festival/conference registration and payment goes directly to the Archaeological Legacy Institute.
 
Festival/Conference Registration Forms:[url]https://www.archaeologychannel.org/images/documents/conference/2019/ConfRegistrationForm2019.pdf[url]

Direct questions on registration to the Archaeological Legacy Institute (ALI):
conference@archaeologychannel.org
or call 541-345-5538

**March 31, 2019: This is the deadline if you wish to attend and not present.  The Festival/Conference registration fee is $100 ($130 beginning April 1).   Alternatively, a full-day pass to the Earhart-Noonan Symposium (or other events that day) is $50.  A single presentation pass is $10.  The Wednesday banquet last year was $60.  We are awaiting negotiations with the hotel for this year’s cost.
 
Dates:
May 1, 2019: TAC Festival begins Wednesday evening with the Festival Banquet and Keynote Address delivered by Evan Hadingham, Senior Science Editor at WGBH NOVA.  That kicks off the film festival and attendant conference.
May 2-5, 2019: TAC Film Festival Screenings
May 2-4, 2019: TAC Conference on Cultural Heritage Media. At least two other symposia beside Earhart-Noonan are in the planning stages.
May 2, 3 OR 4, 2019: Earhart-Noonan Symposium (date to be determined):  The Search for Amelia Earhart and Fred Noonan II: Updates and New Developments
 
 
Film Festival:  Films from 2018 are linked here:
[url]https://www.archaeologychannel.org/tac-events/international-film-festival/135-archived-festival-pages/2620-film-festival-2018[url]
 
Information on the 2019 Festival and the selected films is linked here:
[url]https://www.archaeologychannel.org/events-guide/tac-international-film-festival/international-film-festival[url]
 
Conference on Cultural Heritage Media:  Conference information is linked here:
[url]https://www.archaeologychannel.org/events-guide/tac-conference-on-cultural-heritage-media[url]
 
 
For further questions on registration contact Archaeological Legacy Institute (ALI) at:
conference@archaeologychannel.org
or call 541-345-5538

Location: Hilton Eugene and Conference Center, 66 E. 6th Avenue
Eugene, OR 97401, Eugene, Oregon, USA, USA 1-800-937-6660. 

 8 
 on: January 15, 2019, 07:30:34 AM 
Started by Karen Hoy - Last post by Ric Gillespie
That's an excellent article.  Phil Boucher did a great job getting the facts straight. 

This project has caught fire with the media. Attached is a BBC Radio piece that aired yesterday.  I also did a SKYPE video with BBC-1 television.  Haven't seen it yet.  I'm now talking to AOPA Pilot magazine.  And the beat goes on.

 9 
 on: January 15, 2019, 07:28:29 AM 
Started by Karen Hoy - Last post by Bill Mangus
Nice article, for once.


 10 
 on: January 14, 2019, 09:09:09 PM 
Started by Karen Hoy - Last post by Karen Hoy
From the MSN homepage:

https://tinyurl.com/ybbc7pkb

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