Lateral variations in the upper mantle velocity structure under Northern Australia

  title={Lateral variations in the upper mantle velocity structure under Northern Australia},
  author={S. C. Dey},
5 Citations
Broadband observations of upper-mantle seismic phases in northern Australia and the attenuation structure in the upper mantle
Abstract Sources in the earthquake belt through Indonesia and New Guinea, recorded at a broadband Guralp CMG3 seismometer at the Warramunga array in the Northern Territory of Australia, give goodExpand
Shear wave splitting in refracted waves returned from the upper mantle transition zone beneath northern Australia
The broadband recording site at Warramunga (WRA) in the Northern Territory of Australia provides good coverage of seismic wave propagation through the upper mantle for sources in the earthquake beltExpand
The upper-mantle S and P velocity structure beneath northern Australia from broad-band observations
Abstract Good coverage of seismic wave propagation through the upper part of the mantle can be obtained for sources in the earthquake belt through Indonesia and New Guinea recorded at broad-bandExpand
Variations In Upper Mantle Structure Under Northern Australia
SUMMARY Temporary array deployments of short-period seismometers in northern Australia have been used to build up composite record sections for waves interacting with the upper mantle. StableExpand
The 520 km discontinuity
Although some of the earliest suggestions of a seismic discontinuity near 520 km depth in the upper mantle came from seismic studies of the structure to the north of Australia, results from moreExpand


Short‐period P‐wave generation by Rayleigh‐wave scattering at Novaya Zemlya
The teleseismic P-wave signal from underground explosions at Novaya Zemlya Island is followed by a coda lasting several minutes. The power level of the coda was measured on Lasa beams for twoExpand
Phase Changes in the Upper Mantle
The location of the transition regions and the seismic velocities in their vicinity supply new information regarding the composition and temperature of the upper mantle. Expand
The use of Closely Spaced Receiver Arrays to Delineate the Structure of the Upper Mantle Under Northern Australia
Data from three seismograph arrays in the Northern Territory are used to investigate the velocity structure of the upper mantle above the 400 km discontinuity. These arrays are the permanent 26 kmExpand
Subducted slabs and the geoid: Constraints on mantle rheology and flow
Geoid anomalies are primarily the result of the density contrasts driving mantle convection and plate motion. The total geoid anomaly resulting from a given density contrast in a convecting earth isExpand
Seismic scattering on underside reflection at the core-mantle
  • 1981
Upper mantle P structure on the ocean side of the Japan‐Kurile Arc
Slowness measurements are made for the first and later arrivals of P waves from about seventy Kurile-Kamchatka earthquakes (13° < Δ < 30°) at the Wakayama Micro-Earthquake Observatory, Japan. TheExpand
The crust-mantle transition in the Bering Sea
abstract A plane layered oceanic crustal model is investigated. A point source and receiver are located in the oceanic fluid layer. The Mohorovic˘ic discontinuity is treated as a layered transitionExpand
A compressional velocity distribution for the upper mantle
Abstract A compressional wave velocity model is presented for the upper mantle at depths less than 1000 km under the stable continental region of northern Australia. The model is consistent withExpand
Lateral variations of S velocity in the upper mantle from higher Rayleigh modes
Summary. The generalized inverse theory has been applied to interpret several sets of higher mode data, previously obtained for the United States and the Pacific Ocean. The depth-resolving power ofExpand