Magnetic anomaly variations near mid-ocean ridge spreading centers are sensitive to a variety of crustal accretionary processes as well geomagnetic field when the crust forms. We collected near-bottom vector magnetic data during series 21 autonomous underwater vehicle Sentry dives 9°50′N on East Pacific Rise (EPR) covering ∼26 km along-axis. These document 2–3 wide axial high that is commonly o...