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Underground Rivers - University of New Mexico

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Evaporation<br />

Ocean<br />

Chapter 7 -- The Concept <strong>of</strong> Circulation<br />

The Dual Hydrologic Cycle with Rain-Fed Caverns<br />

But we'll not advance our schematic beyond the thoughts <strong>of</strong> the times. The challenge isn't that <strong>of</strong><br />

drawing arrows; it is that <strong>of</strong> explaining how the arrows work.<br />

The diagrams below illustrate the dual mechanisms by which water returns from the sea to<br />

upland streams, Ecclesiastes 1:7 as schematic. The superterranean means was agreed upon by<br />

all -- it is the sun's power that draws water upwards. The motor on the left, the energy propelling<br />

subterranean streamflow -- for <strong>of</strong> course it's down there -- was yet unknown.<br />

Springs<br />

Ocean<br />

Precipitation<br />

<strong>Rivers</strong><br />

<strong>Underground</strong><br />

<strong>Rivers</strong><br />

Clouds<br />

Land<br />

Caverns<br />

Precipitation<br />

Springs<br />

Springs<br />

Ocean<br />

As we'll see in the chapter ahead, we've had lots <strong>of</strong> ideas about circulation. As Ramazzini would<br />

have phrased it, "Avia, Pervia!"<br />

DRAFT 1122//66//22001122<br />

Uppddaatteess aatt hhttttpp::////www. .uunnm. .eedduu//~rrhheeggggeenn//UnnddeerrggrroouunnddRi ivveerrss. .hhttml l<br />

70

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