Longitude

About: Longitude is a research topic. Over the lifetime, 2260 publications have been published within this topic receiving 54988 citations. The topic is also known as: angle of longitude.

Geographical variations of the 0S0 normal mode amplitude : predictions and observations after the Sumatra-Andaman earthquake

Abstract: The radial seismic normal mode 0S0 was strongly excited by the 2004 Mw = 93 Sumatra-Andaman earthquake at a period of 205 min In a spherically symmetric Earth model, 0S0 amplitude is the same everywhere on the Earth’s surface However, when the ellipticity and rotation of the Earth are taken into consideration, theoretical computations predict an amplitude of 0S0 1% higher at the pole than at the equator Based on a realistic three-dimensional heterogeneous rotating elliptic Earth model, our predictions indicate that the amplitude of 0S0 is 2% higher at the pole than at the equator A longitude dependency of 0S0 amplitude is also shown The analysis of 13 superconducting gravimeter (SG) records of the 2004 Sumatra-Andaman earthquake supports the predicted geographical variations of 0S0 amplitude We have also obtained new estimates for the frequency and Q of 0S0: 08146566±16 10−6 mHz and 5506±19

Method of navigating using position-information-codes which include information regarding the latitude and longitude of a desired location

Abstract: A method of navigating including decoding a position-information code represented by a string of codes including the latitude and the longitude of a position entered via an input means into original information on the position including the latitude and the longitude of the position. Information created from the recovered original information resulting from the decoding of the position-information code and map data read out from a map-information storage unit are presented to the user by using a display means and a sound outputting means.

SAS-2 observations of gamma rays from the galactic plane. [noting longitude and latitude observation]

Abstract: The SAS-II gamma ray experiment has made measurements on the high energy (> 30 MeV) gamma rays coming from the galactic center region. The gamma radiation in this region is very much more intense than in the anticenter region, in agreement with the observations made with the OSO-III experiment of Kraushaar et al. (1973), and exhibits a narrow distribution (The 2a width is no more than 60.) along the plane which is nearly uniform in intensity from 3300 to 300. The average value, +.40 including present uncertainties other than statistical is (1.15 -.35) x 10 -4 photons/fm 2 sterad.- sec). The energy spectrum in the range from 35 MeV to 210 MeV is quite flat, consistent with a cosmic ray-interstellar matter interaction r 0 o-decay spectrum, or a mixture of this spectrum and a spectrum formed by Compton radiation from cosmic ray electrons. The intensity of the radiation in the anticenter direction is consistent with that expected from the cosmic ray-interstellar matter interaction

Longitude dependence of geomagnetically trapped electrons

Abstract: This paper will describe a method for calculating the longitude dependence of geomagnetically trapped electrons at low altitude on basis of scattering and energy loss due to atmospheric interactions.