Udintsev Transform

No photo available for this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 55.97°S
  • 143.17°W

  • Unknown
     

  • 335030
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

Most Recent Bulletin Report: December 1990 (BGVN 15:12) Citation IconCite this Report


T-waves near Udintsev Fracture Zone/Pacific-Antarctic Rise junction

RSP stations detected acoustic signals (T-waves) from 42 seismic events between 29 October and 1 November, and 523 on 15-19 November. The strongest shocks reached mb 5.3 on 29 October at 0643 GMT and 1 November at 0157 GMT. Preliminary WWSSN epicenter determinations were at 55.96°S, 143.20°W and 55.979°S, 143.15°W, with latitude uncertainties of ± 23 and 16 km, respectively. The located events occurred along a young, seismically active portion of the Udintsev Fracture Zone (Molnar and others, 1975) near its intersection with the Pacific-Antarctic Ridge (figure 1). Talandier notes that "it is possible that this crisis is linked to volcanic activity." Bathymetric data for this region are very limited, and seismic stations are distant, with WWSSN detection thresholds of about M 5.

Figure (see Caption) Figure 1. Computer-generated bathymetric map of a portion of the S-central Pacific, showing the Eltanin and Udintsev Fracture Zone systems, and the prominent seamount at about 53.9°S, 140.3°W in the epicentral area of the March 1991 swarm. Contour interval, 200 m. Courtesy of the U.S. Naval Research Laboratory.

Reference. Molnar, P., Atwater, T., Mammerickx, J., and Smith, S.M., 1975, Magnetic anomalies, bathymetry and the tectonic evolution of the south Pacific since the Late Cretaceous: Geophysical Journal of the Royal Astronomical Society, v. 40, p. 383-420.

Information Contacts: J. Talandier, LDG Tahiti; E. Bergman, NEIC.

The Global Volcanism Program has no Weekly Reports available for Udintsev Transform.

Bulletin Reports - Index


Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.

12/1990 (BGVN 15:12) T-waves near Udintsev Fracture Zone/Pacific-Antarctic Rise junction




Information is preliminary and subject to change. All times are local (unless otherwise noted)


December 1990 (BGVN 15:12) Citation IconCite this Report


T-waves near Udintsev Fracture Zone/Pacific-Antarctic Rise junction

RSP stations detected acoustic signals (T-waves) from 42 seismic events between 29 October and 1 November, and 523 on 15-19 November. The strongest shocks reached mb 5.3 on 29 October at 0643 GMT and 1 November at 0157 GMT. Preliminary WWSSN epicenter determinations were at 55.96°S, 143.20°W and 55.979°S, 143.15°W, with latitude uncertainties of ± 23 and 16 km, respectively. The located events occurred along a young, seismically active portion of the Udintsev Fracture Zone (Molnar and others, 1975) near its intersection with the Pacific-Antarctic Ridge (figure 1). Talandier notes that "it is possible that this crisis is linked to volcanic activity." Bathymetric data for this region are very limited, and seismic stations are distant, with WWSSN detection thresholds of about M 5.

Figure (see Caption) Figure 1. Computer-generated bathymetric map of a portion of the S-central Pacific, showing the Eltanin and Udintsev Fracture Zone systems, and the prominent seamount at about 53.9°S, 140.3°W in the epicentral area of the March 1991 swarm. Contour interval, 200 m. Courtesy of the U.S. Naval Research Laboratory.

Reference. Molnar, P., Atwater, T., Mammerickx, J., and Smith, S.M., 1975, Magnetic anomalies, bathymetry and the tectonic evolution of the south Pacific since the Late Cretaceous: Geophysical Journal of the Royal Astronomical Society, v. 40, p. 383-420.

Information Contacts: J. Talandier, LDG Tahiti; E. Bergman, NEIC.

Eruptive History


Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 1990 Oct 29 ] [ 1990 Nov 19 ] Uncertain 0   Udinstev Fracture Zone

The Global Volcanism Program has no synonyms or subfeatures listed for Udintsev Transform.

The Global Volcanism Program has no photographs available for Udintsev Transform.

Smithsonian Sample Collections Database


There are no samples for Udintsev Transform in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites