The Topographic Signature of Mantle Pressure Build‐Up Beneath Subducting Plates: Insights From Spherical Subduction Models

Abstract Subduction zones are associated with spatially heterogeneous pressure fields that, depending on location, push/pull Earth's surface producing dynamic topography (DT). Despite this, subduction zones, and fields, typically over‐simplified within global mantle flow models. Here, I use models a domain to probe build‐up beneath subducting plates (SPs) the resulting DT. Positive develops SP in most This produces positive DT (≤450 m) tilts upwards toward trench (≤0.25 m/km). As size increases, magnitude increases greater topography/tilting. At scale, find potential evidence for modeled tilting published residual topography. argue that rigorous incorporation of into models, hence inclusion this signal, is needed continue bring future predictions observational estimates closer alignment.