Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
Journal Home About Issues in Progress Current Issue All Issues Early Posting Feature Issues

Hafgerðingar and giant waves

Siebren van der Werf

Not Accessible

Your library or personal account may give you access

Abstract

A 13th-century text in Old Norse, Konungs Skuggsjá (translated as The King’s Mirror), tells about a phenomenon that may be encountered in the Greenland Sea. It is called hafgerðingar (sea fences). The horizon is raised, and from there three giant waves come rolling in. Recently Lehn and Schroeder have explained the phenomenon as a superior mirage. I extend their analysis by introducing a periodic time dependence in the properties of the inversion layer, and show that also the illusion of incoming waves and an immediate danger may so be explained.

© 2017 Optical Society of America

Full Article  |  PDF Article
More Like This
Mirages at Lake Geneva: the Fata Morgana

Andrew T. Young and Eric Frappa
Appl. Opt. 56(19) G59-G68 (2017)

Skerrylike mirages and the discovery of Greenland

Waldemar H. Lehn
Appl. Opt. 39(21) 3612-3619 (2000)

Some theorems on “arctic mirages”: hillingar effect and superior mirages

L. Dettwiller
J. Opt. Soc. Am. A 36(12) 1997-2004 (2019)

View More...

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Supplementary Material (5)

NameDescription
Visualization 1: MP4 (1675 KB)      Parametrization: x0 = 111 km, r = 10 km. Inversion surface wavelength = 10 km, amplitude = 2 m. Eye height fixed at 3.5 m.
Visualization 2: MP4 (3953 KB)      Parametrization: x0 = 111 km, r = 10 km. Inversion surface wavelength = 10 km, amplitude = 2 m. Eye height periodic 3.25 - 3.75 m. Distance ship 1 nautical mile.
Visualization 3: MP4 (3884 KB)      Parametrization: x0 = 111 km, r = 10 km. Inversion surface wavelength = 10 km, amplitude = 2 m. Eye height periodic 3.25 - 3.75 m. Distance ship 12 nautical miles.
Visualization 4: MP4 (3739 KB)      Parametrization: x0 = 101 km, r = 20 km. No inversion surface waves. Eye height periodic 3.25 - 3.75 m. Distance ship 1 nautical mile.
Visualization 5: MP4 (3937 KB)      Parametrization: x0 = 101 km, r = 20 km. Inversion surface wavelength = 10 km, amplitude = 1 m. Eye height periodic 3.25 - 3.75 m. Distance ship 1 nautical mile.

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (16)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters
Select Topics Cancel
Top
       
© Copyright 2023 | Optica Publishing Group. All Rights Reserved
Privacy | Terms of Use