Models of depth-dependent bioturbation at MANOP site H in the eastern equatorial Pacific. Article

Kadko, D, Heath, GR. (1984). Models of depth-dependent bioturbation at MANOP site H in the eastern equatorial Pacific. . JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES, 89(C4), 6567-6574. 10.1029/JC089iC04p06567

cited authors

  • Kadko, D; Heath, GR

authors

abstract

  • Independent bioturbation rates estimated by balancing dissolved and particulate diagenetic Mn fluxes are compatible with the values obtained from the radium model. Such results are consistent with 210Pb and 230Th measurements reported here and with MANOP lander and porewater observations that rapid organic carbon degradation in these sediments consumes oxygen within a few centimeters of the sediment-seawater interaface. The modeled decrease in bioturbation (expressed as a biodiffusion coefficient) is consistent with values of more than 25 cm2/kyr at the surface falling to less than 0.4 cm2/kyr at a depth of 14 cm.-from Authors

publication date

  • January 1, 1984

published in

Digital Object Identifier (DOI)

start page

  • 6567

end page

  • 6574

volume

  • 89

issue

  • C4