Ubiquitous porosity gradients have a potentially important effect on the mixing of particle-bound tracers, such as 210Pb Mass-depth coordinates cannot be used to deal with these effects if values of the traditional mixing coefficient, D,, are required. This paper compares and evaluates three different means of dealing directly with porosity gradients while modeling bioturbation, i.e. mean const...

This work was funded by the Spanish Ministry of Economy and Competiveness (Project MEDSHIFT, CGL2015-71809-P), Science, Innovation Universities (SUMAECO, RTI2018-095441-B-C21) King Abdullah University for Science Technology (3834 KAUST-CSIC Research Collaboration base line funding to CMD). We thank Ioannis Savva, Julius Glampedakis, Scott Bennet Raquel Vaquer-Sunyer field assistance Joan Manuel...

The sedimentological, geochemical, physical and magnetic properties of 40 surface basal sediment samples box cores collected throughout the Canadian Arctic Archipelago (CAA) from Beaufort Shelf to Lancaster Sound were analyzed determine sedimentary processes that operate within CAA during pre- post-industrial periods (i.e., before after 1900 Common Era or CE). In addition, chronology seven sele...