Zobrazeno 1 - 10
of 204
pro vyhledávání: '"Toshio Fukushima"'
Autor:
Toshio Fukushima
Publikováno v:
Geophysical Journal International. 222:1898-1908
SUMMARY By utilizing the addition theorems of the arctangent function and the logarithm, we developed a new expression of Bessel’s exact formula to compute the prismatic gravitational field using the triple difference of certain analytic functions.
Autor:
Toshio Fukushima
Publikováno v:
Geophysical Journal International. 220:610-660
SUMMARY The exact analytical formulae to compute the gravitational field of a rectangular prism suffer from round-off errors when the evaluation point is outside the Brillouin sphere of the prism. The error magnitude grows cubically with respect to t
Autor:
P-Y Qian, Patrick Collins, E Pelleter, Reetu Sharma, A Myhrvold, A Swaddling, C. L. Van Dover, Yeon Jee Suh, Michal Tomczak, Bramley J. Murton, Nélia C. Mestre, Anna Metaxas, Tina N. Molodtsova, Chunhui Tao, J Vermilye, L Cuyvers, SO Popoola, Toshio Fukushima, C Kriete, Rachel E. Boschen-Rose, Jozée Sarrazin, Jens Carlsson, Peter Croot, Ana Colaço, Robert Kennedy, Amy Gartman, Jason B. Sylvan
Publikováno v:
Marine Policy (0308-597X) (Elsevier BV), 2020-11, Vol. 121, P. 104183 (7p.)
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Van Dover, C L, Colaço, A, Collins, P C, Croot, P, Metaxas, A, Murton, B J, Swaddling, A, Boschen-Rose, R E, Carlsson, J, Cuyvers, L, Fukushima, T, Gartman, A, Kennedy, R, Kriete, C, Mestre, N C, Molodtsova, T, Myhrvold, A, Pelleter, E, Popoola, S O, Qian, P Y, Sarrazin, J, Sharma, R, Suh, Y J, Sylvan, J B, Tao, C, Tomczak, M & Vermilye, J 2020, ' Research is needed to inform environmental management of hydrothermally inactive and extinct polymetallic sulfide (PMS) deposits ', Marine Policy, vol. 121, 104183 . https://doi.org/10.1016/j.marpol.2020.104183
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Van Dover, C L, Colaço, A, Collins, P C, Croot, P, Metaxas, A, Murton, B J, Swaddling, A, Boschen-Rose, R E, Carlsson, J, Cuyvers, L, Fukushima, T, Gartman, A, Kennedy, R, Kriete, C, Mestre, N C, Molodtsova, T, Myhrvold, A, Pelleter, E, Popoola, S O, Qian, P Y, Sarrazin, J, Sharma, R, Suh, Y J, Sylvan, J B, Tao, C, Tomczak, M & Vermilye, J 2020, ' Research is needed to inform environmental management of hydrothermally inactive and extinct polymetallic sulfide (PMS) deposits ', Marine Policy, vol. 121, 104183 . https://doi.org/10.1016/j.marpol.2020.104183
Polymetallic sulfide (PMS) deposits produced at hydrothermal vents in the deep sea are of potential interest to miners. Hydrothermally active sulfide ecosystems are valued for the extraordinary chemosynthetic communities that they support. Many count
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f973fa6d70c860a615aaa1e761bb82b5
Autor:
Toshio Fukushima
Publikováno v:
Proceedings of the International Astronomical Union. 14:276-279
We developed a numerical method[-70pt] to compute the gravitational field of an infinitely-thin axisymmetric disc with an arbitrary surface mass density profile. We evaluate the gravitational potential by a split quadrature using the double exponenti
Autor:
Toshio Fukushima
Publikováno v:
Geophysical Journal International. 215:864-879
Autor:
Toshio Fukushima
Publikováno v:
Journal of Geodesy. 92:1371-1386
We developed an accurate method to compute the gravitational field of a tesseroid. The method numerically integrates a surface integral representation of the gravitational potential of the tesseroid by conditionally splitting its line integration int
Autor:
Toshio Fukushima
Publikováno v:
Computer Physics Communications. 221:109-117
We developed a numerical method to compute the electromagnetic field of arbitrary static and axisymmetric current distribution. The method (i) numerically evaluates a double integral of the electrostatic and magnetostatic potentials of an infinitely
Autor:
Toshio Fukushima
Publikováno v:
Journal of Geodesy. 92:123-130
In order to accelerate the spherical harmonic synthesis and/or analysis of arbitrary function on the unit sphere, we developed a pair of procedures to transform between a truncated spherical harmonic expansion and the corresponding two-dimensional Fo
Autor:
Toshio Fukushima
Publikováno v:
Journal of Geodesy. 91:995-1011
In order to move the polar singularity of arbitrary spherical harmonic expansion to a point on the equator, we rotate the expansion around the y-axis by $$90^{\circ }$$ such that the x-axis becomes a new pole. The expansion coefficients are transform
Autor:
Toshio Fukushima
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 463:1500-1517