  In space and astrophysical plasmas turbulence leads to the development of
coherent structures characterized by a strong current density and important
magnetic shears. Using hybrid-kinetic simulations of turbulence (3D with
different energy injection scales) we investigate the development of these
coherent structures and characterize their shape. First, we present different
methods to estimate the overall shape of the 3D structure using local
measurements, foreseeing application on satellite data. Then we study the local
magnetic configuration inside and outside current peak regions, comparing the
statistics in the two cases. Last, we compare the statistical properties of the
local configuration obtained in simulations with the ones obtained analyzing an
MMS dataset having similar plasma parameters. Thanks to our analysis, 1) we
validate the possibility to study the overall shape of 3D structures using
local methods, 2) we provide an overview of local magnetic configuration
emerging in different turbulent regimes, 3) we show that our 3D-3V simulations
can reproduce the structures that emerge in MMS data for the periods studied by
Phan et al. (2018), Stawarz et al. (2019).
