I’ve looked at a lot of ridges and the data from ice cores side by side. The striations are basically the imprint of ancient glaciers moving over the bedrock, so they’re telling us about past ice dynamics, not necessarily the same wind patterns that melt today. In a few cases we can match the orientation of the grooves to known glacial flow directions that we infer from isotopic records, but the chemistry in the cores is what gives us the temperature and precipitation story. So while the two datasets can be complementary – the ridges give a mechanical record, the cores give a climate record – there isn’t a one‑to‑one link between the grooves and the modern wind‑driven melt patterns.