随着岩浆上升、压力下降，溶解的气体会转变为气泡，由此产生喷发柱与熔岩流之间的差异。
以剖面系统的方式探索地下岩浆、气体、裂隙及通往地表的通道。
由英文原文机器翻译。 打开英文原文
A volcano is remembered by the shape of its mountain, but most of the work happens under the ground. The line running across the middle of the cross-section is the ground surface, and everything below it is underground. Five layers of equal thickness are stacked there, and the roof of the magma chamber lies about two and a half layers down. The layers are a depth scale you can count.
Background: USGS: What We Do — Volcano Hazards (what is studied, from magma storage below to eruption products at the surface).
Find the ground surface line, then count how many layers lie between it and the magma chamber.
models/volcano-magma-chamber/model.glb随着岩浆上升、压力下降，溶解的气体会转变为气泡，由此产生喷发柱与熔岩流之间的差异。
岩浆房并非像水气球那样整体膨胀，其力量会逸入裂隙与薄弱之处。
粘稠度越高，气泡越容易被困住；粘稠度越低，气体逸出越多，便会以熔岩形式流出。
以易读的方式呈现火山体、地层、岩浆房、通道与地下水层。
In the cross-section, what is drawn as the ground surface?