Results 11 to 20 of about 233,567 (207)

The period and Q of the Chandler wobble [PDF]

open access: yesGeophysical Journal International, 1981
The calculation of the theoretical period of the Chandler wobble is extended to account for the non-hydrostatic portion of the earth's equatorial bulge and the effect of the fluid core upon the lengthening of the period due to the pole tide. The theoretical period of a realistic perfectly elastic earth with an equilibrium pole tide is found to be 426.7
Smith, Martin L., Dahlen, F. A.
openaire   +2 more sources

Estimation of period and Q of the Chandler wobble [PDF]

open access: yesGeophysical Journal International, 1996
SUMMARY The period P and Q-value of the Chandler wobble are two fundamental functionals of the Earth's internal physical properties and global geodynamics. We revisit the problem of the estimation of P and Q, using 10.8 yr of modern polar motion as well as contemporary atmospheric angular momentum (AAM) data.
Furuya, Masato, Chao, B. F.
openaire   +2 more sources

On a possible connection between Chandler wobble and dark matter [PDF]

open access: yes, 2009
Chandler wobble excitation and damping, one of the open problems in geophysics, is treated as a consequence in part of the interaction between Earth and a hypothetical oblate ellipsoid made of dark matter.
Portilho, Oyanarte
core   +3 more sources

Analysis of 25 Years of Polar Motion Derived from the DORIS Space Geodetic Technique Using FFT and SSA Methods

open access: yesSensors, 2020
Polar motion (PM) has a close relation to the Earth’s structure and composition, seasonal changes of the atmosphere and oceans, storage of waters, etc.
Qiaoli Kong   +5 more
doaj   +1 more source

The bumble bees (Hymenoptera: Apidae: Bombus) of Arkansas, fifty years later [PDF]

open access: yes, 2015
Many species of bumble bees (Hymenoptera: Apidae: Bombus Latreille) are declining throughout their ranges in North America, yet detecting population trends can be difficult when historical survey data are lacking.  In the present study, contemporary data
Szalanski, Allen L., Tripodi, Amber D.
core   +2 more sources

Is the Chandler period variable? [PDF]

open access: yesGeophysical Journal International, 1982
Summary. This paper investigates whether the Chandler period is variable in time. The first step is to develop an Instantaneous Frequency Analysis to trace the time-varying spectrum for a non-stationary , complex-valued time series. The method is then applied to the observed polar motion to find no significant fluctuation of the Chandler period.
openaire   +1 more source

Orbital Complications of Acute Sinusitis in Pediatric Patients: Management of Chandler III Patients

open access: yesAllergy & Rhinology, 2022
Background Surgery is often avoided in the setting of pediatric orbital complications from acute sinusitis unless necessitated by alarming ophthalmological signs. Criteria for surgical intervention are not well-defined.
Mohamad Z. Saltagi MD   +6 more
doaj   +1 more source

Observations of late-winter marine microbial activity in an ice-covered fjord, west Greenland [PDF]

open access: yesEarth System Science Data, 2020
Direct observations of marine microbial metabolism are sparse in the Arctic, particularly under sea ice during winter. This paper presents the first observations of Arctic winter microbial activity under sea ice in a west Greenland fjord (Lillefjord ...
D. Chandler, S. Mackie, S. Mackie
doaj   +1 more source

Polyphony of Short-Term Climatic Variations

open access: yesAtmosphere, 2021
It is widely accepted to believe that humanity is mainly responsible for the worldwide temperature growth during the period of instrumental meteorological observations. This paper aims to demonstrate that it is not so simple.
Dmitry M. Sonechkin   +1 more
doaj   +1 more source

Is the Chandler Period Stable? [PDF]

open access: yesSymposium - International Astronomical Union, 1993
The problem on Chandler period is an unsolved one. Several authors suggested a hypothesis that the Chandler wobble is only one free period which slightly changes in time and is amplitude-dependent. In this paper we shall make the hypothesis more rigorous than that has been carried yet.
openaire   +1 more source

Home - About - Disclaimer - Privacy