SP12RTS : a degree-12 model of shear- and compressional-wave velocity for Earth's mantle. / Koelemeijer, P.; Ritsema, J.; Deuss, A.; van Heijst, H. J.

In: Geophysical Journal International, Vol. 204, No. 2, 01.02.2016, p. 1024-1039.

Research output: Contribution to journalArticlepeer-review

Published

Standard

SP12RTS : a degree-12 model of shear- and compressional-wave velocity for Earth's mantle. / Koelemeijer, P.; Ritsema, J.; Deuss, A.; van Heijst, H. J.

In: Geophysical Journal International, Vol. 204, No. 2, 01.02.2016, p. 1024-1039.

Research output: Contribution to journalArticlepeer-review

Harvard

Koelemeijer, P, Ritsema, J, Deuss, A & van Heijst, HJ 2016, 'SP12RTS: a degree-12 model of shear- and compressional-wave velocity for Earth's mantle', Geophysical Journal International, vol. 204, no. 2, pp. 1024-1039. https://doi.org/10.1093/gji/ggv481

APA

Koelemeijer, P., Ritsema, J., Deuss, A., & van Heijst, H. J. (2016). SP12RTS: a degree-12 model of shear- and compressional-wave velocity for Earth's mantle. Geophysical Journal International, 204(2), 1024-1039. https://doi.org/10.1093/gji/ggv481

Vancouver

Koelemeijer P, Ritsema J, Deuss A, van Heijst HJ. SP12RTS: a degree-12 model of shear- and compressional-wave velocity for Earth's mantle. Geophysical Journal International. 2016 Feb 1;204(2):1024-1039. https://doi.org/10.1093/gji/ggv481

Author

Koelemeijer, P. ; Ritsema, J. ; Deuss, A. ; van Heijst, H. J. / SP12RTS : a degree-12 model of shear- and compressional-wave velocity for Earth's mantle. In: Geophysical Journal International. 2016 ; Vol. 204, No. 2. pp. 1024-1039.

BibTeX

@article{688d4ef3b9ea40f188e16c84f148d0be,
title = "SP12RTS: a degree-12 model of shear- and compressional-wave velocity for Earth's mantle",
abstract = " We present the new model SP12RTS of isotropic shear-wave (V S ) and compressional-wave (V P ) velocity variations in the Earth's mantle. SP12RTS is derived using the same methods as employed in the construction of the shear-wave velocity models S20RTS and S40RTS, and the same data types. SP12RTS includes additional traveltime measurements of P-waves and new splitting measurements: 33 normal modes with sensitivity to the compressional-wave velocity and 9 Stoneley modes with sensitivity primarily to the lowermost mantle. Contrary to S20RTS and S40RTS, variations in V S and V P are determined without invoking scaling relationships. Lateral velocity variations in SP12RTS are parametrised using spherical harmonics up to degree 12, to focus on long-wavelength features of V S and V P and their ratio R. Large-lowvelocity provinces (LLVPs) are observed for both V S and V P . SP12RTS also features an increase of R up to 2500 km depth, followed by a decrease towards the core-mantle boundary. A negative correlation between the shear-wave and bulk-sound velocity variations is observed for both the LLVPs and the surrounding mantle. These characteristics can be explained by the presence of post-perovskite or large-scale chemical heterogeneity in the lower mantle. ",
keywords = "Body waves, Composition of the mantle, Seismic tomography, Surface waves and free oscillations",
author = "P. Koelemeijer and J. Ritsema and A. Deuss and {van Heijst}, {H. J.}",
year = "2016",
month = feb,
day = "1",
doi = "10.1093/gji/ggv481",
language = "English",
volume = "204",
pages = "1024--1039",
journal = "Geophysical Journal International",
issn = "0956-540X",
publisher = "Wiley-Blackwell",
number = "2",

}

RIS

TY - JOUR

T1 - SP12RTS

T2 - a degree-12 model of shear- and compressional-wave velocity for Earth's mantle

AU - Koelemeijer, P.

AU - Ritsema, J.

AU - Deuss, A.

AU - van Heijst, H. J.

PY - 2016/2/1

Y1 - 2016/2/1

N2 - We present the new model SP12RTS of isotropic shear-wave (V S ) and compressional-wave (V P ) velocity variations in the Earth's mantle. SP12RTS is derived using the same methods as employed in the construction of the shear-wave velocity models S20RTS and S40RTS, and the same data types. SP12RTS includes additional traveltime measurements of P-waves and new splitting measurements: 33 normal modes with sensitivity to the compressional-wave velocity and 9 Stoneley modes with sensitivity primarily to the lowermost mantle. Contrary to S20RTS and S40RTS, variations in V S and V P are determined without invoking scaling relationships. Lateral velocity variations in SP12RTS are parametrised using spherical harmonics up to degree 12, to focus on long-wavelength features of V S and V P and their ratio R. Large-lowvelocity provinces (LLVPs) are observed for both V S and V P . SP12RTS also features an increase of R up to 2500 km depth, followed by a decrease towards the core-mantle boundary. A negative correlation between the shear-wave and bulk-sound velocity variations is observed for both the LLVPs and the surrounding mantle. These characteristics can be explained by the presence of post-perovskite or large-scale chemical heterogeneity in the lower mantle.

AB - We present the new model SP12RTS of isotropic shear-wave (V S ) and compressional-wave (V P ) velocity variations in the Earth's mantle. SP12RTS is derived using the same methods as employed in the construction of the shear-wave velocity models S20RTS and S40RTS, and the same data types. SP12RTS includes additional traveltime measurements of P-waves and new splitting measurements: 33 normal modes with sensitivity to the compressional-wave velocity and 9 Stoneley modes with sensitivity primarily to the lowermost mantle. Contrary to S20RTS and S40RTS, variations in V S and V P are determined without invoking scaling relationships. Lateral velocity variations in SP12RTS are parametrised using spherical harmonics up to degree 12, to focus on long-wavelength features of V S and V P and their ratio R. Large-lowvelocity provinces (LLVPs) are observed for both V S and V P . SP12RTS also features an increase of R up to 2500 km depth, followed by a decrease towards the core-mantle boundary. A negative correlation between the shear-wave and bulk-sound velocity variations is observed for both the LLVPs and the surrounding mantle. These characteristics can be explained by the presence of post-perovskite or large-scale chemical heterogeneity in the lower mantle.

KW - Body waves

KW - Composition of the mantle

KW - Seismic tomography

KW - Surface waves and free oscillations

UR - http://www.scopus.com/inward/record.url?scp=84958656771&partnerID=8YFLogxK

U2 - 10.1093/gji/ggv481

DO - 10.1093/gji/ggv481

M3 - Article

AN - SCOPUS:84958656771

VL - 204

SP - 1024

EP - 1039

JO - Geophysical Journal International

JF - Geophysical Journal International

SN - 0956-540X

IS - 2

ER -