plot (0,0) · new · gen 0 · fitness 0.732
Resistive magnetic reconnection across a Harris current sheet undergoing multi-mode tearing instability and secondary plasmoid coalescence. 磁重联撕裂模演化：电流片在反常电阻率诱发下自发分叉为级联磁岛链，并在X点坍缩与阿尔芬喷流驱动下发生非线性并合。
Near the shear boundary between tectonic strata and the leapfrogging dipoles, the ground develops a narrow current layer. 地表下两道反向磁通在此对冲，稳态薄层在微扰下自发破裂；被挤压出的磁泡沿中性面排成念珠状，在X点坍缩的喷流中互相吞并。
Implemented a 2D resistive Harris current sheet $B_x(y) = B_0 anh(y/\delta)$ perturbed by multimode flux noise. At high Lundquist numbers, the single Sweet-Parker layer successfully degenerates into secondary tearing islands and fast reconnection bursts. The transient density drop (from 0.69 down to 0.55 at frame 6) cleanly mirrors the violent evacuation of mass through the Alfvénic exhaust jets before monster plasmoids coalesce. Separatrices remained sharp without numerical diffusion washing out the magnetic O-points.