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InterRidge Cruise Bursaries
InterRidge student prizes
Student awards at: Ocean Mantle Dynamics: from Spreading
Center to Subduction Zone” workshop, October 2011
Akiko Takeo (Earthquake Research Institute of Tokyo University)
received an IR best poster award for her work entitled: “Seismic
anisotropy in the uppermost mantle beneath oceanic regions from
data of broadband OBSs”. She is interested in the seismic velocity
structure in the uppermost mantle, as it is one of the keys to
understanding plate tectonics. Takeo analyses data from broadband
ocean bottom seismometers deployed in oceanic regions such as the
Shikoku Basin, south of Japan. 1D radially anisotropic structures
beneath the Shikoku Basin can be obtained by measuring phase
velocities of surface waves, indicating deformation at depths greater
than 50 km.
Of the Mantle Imaging workshop, she said: “It was a good
experience for me to attend the workshop because I could discuss
both methods and results with seismologists, geomagnetists and
petrologists. Also I learnt from other presentations about structure
and processes in the mid ocean ridges and subduction zones. The
field trip was also a good chance to study the composition and
deformation of peridotite by seeing real rocks”.
Shusaku Yamazaki (Niigata University, Japan, working with Prof.
Sumio Miyashita), was also awarded an IR student poster prize for
his poster: “Formation of incipient oceanic island arc crust: geology
and geochemistry of the late intrusive rocks in the Oman
Ophiolite”. Oman ophiolite is considered as an analogue for fastspreading
oceanic crust and upper mantle sequences. Yamazaki’s
interest in the Oman ophiolite is the petrogenesis of late intrusive
rocks with island arc type characteristics in the lower gabbroic crust.
New mapping in the lower oceanic crustal sequence allows
recognition of the detailed distribution of late intrusive plutonics
and boninitic dike swarms. In the poster, it is argued that their
petrogenesis is based on petrography and geochemistry, and
proposes that the complex of late intrusive plutonics in the mapped
area can be regarded as a good example for early stage evolution of
an intra-oceanic island arc crust.
InterRidge-sponsored
collaborations 2008-12
Since 2008, InterRidge has
been supporting early-career
researchers across the world, and
has built up an impressive network
of collaborations, as can be seen
here. The next challenge is to
involve South America!
International collaborations
sponsored by InterRidge through
its Fellowship and cruise bursary
programmes between 2008-12.
INTERRIDGE NEWS 23 VOL.21, 2012