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In a recent study, we took advantage of a highly tilted coronal neutral sheetto show that density structures, extending radially over several solar radii(Rs), are released in the forming slow solar wind approximately 4-5 Rs abovethe solar surface (Sanchez-Diaz et al. 2017). We related the signatures of thisformation process to intermittent magnetic reconnection occurring continuouslyabove helmet streamers. We now exploit the heliospheric imagery from the SolarTerrestrial Relation Observatory (STEREO) to map the spatial and temporaldistribution of the ejected structures. We demonstrate that streamersexperience quasi-periodic bursts of activity with the simultaneous outpouringof small transients over a large range of latitudes in the corona. This cyclicactivity leads to the emergence of well-defined and broad structures.Derivation of the trajectories and kinematic properties of the individual smalltransients that make up these large-scale structures confirms their associationwith the forming Slow Solar Wind (SSW). We find that these transients arereleased, on average, every 19.5 hours, simultaneously at all latitudes with atypical radial size of 12 Rs. Their spatial distribution, release rate andthree-dimensional extent are used to estimate the contribution of this cyclicactivity to the mass flux carried outward by the SSW. Our results suggest that,in interplanetary space, the global structure of the heliospheric current sheetis dominated by a succession of blobs and associated flux ropes. Wedemonstrated this with an example event using STEREO-A in-situ measurements.

The temporal and spatial scales of density structures released in the slow solar wind during solar activity maximum