Young Earth Creationism is Improbable

For simplicity I shall be arguing from a single line of evidence which shall address the resolution. Since the resolution concerns only the Earth, I will not give evidence of a young universe, though I believe the universe and Earth are the same age. I am glad the resolution concerns what may or may not be probable as opposed to possible, as support of such would be untenable. Since we are dealing with historical science rather than operational or observable science, one cannot ultimately say one model or another is absolutely true or factual, however probable it may be in light of physical evidences. With that said, I shall move on to my supporting evidence, namely planetary magnetic decay. Evidence Consistent With a Young Earth Planetary magnetic field decay describes the process by which Earth's magnetic field, which is produced via current in the metallic core, decays or diminishes in strength over time. This decay is accepted by both secular and creation scientists. "Ever since scientists generated the first global model of Earth’s magnetic field nearly 180 years ago, its strength has decreased by some 10 percent" (. https://www.sciencenews.org...). The key issue of whether or not this supports a young Earth is how the magnetic field could maintain itself for more than thousands of years. Recent records of the International Geomagnetic Reference Field, the most accurate ever taken, show a net energy loss of 1.4% in just three decades (1970–2000). This means that the field’s energy has halved every 1,465 years or so. At this rate, the Earth cannot be much older than about 10 or 20,000 years. Unless Pro can adequately provide an observed mechanism which could sustain the field for millions of years, my case will stand (. https://answersingenesis.org...). Dr. Russell Humphreys, a well known creationist physicist, has provided a model which best represents and explains the phenomena of planetary magnetic field decay. In this model, magnetohydrodynamics accounts for the energy loss of the planetary dipole field: ". . . motions of the conducting fluid in the core should slowly twist the dipole magnetic lines of force into more complex shapes, subtracting from the dipole field and adding to the non-dipole field. Resistive losses then make the non-dipole field decay more rapidly, so eventually the latter type of losses should prevail" (. http://www.creationresearch.org...). Basically, Humphrey's model proposes that the decay we observe is due to ohmic losses in the dipole-generating current of Earth's liquid core. Both creationists and secularists believe that the Earth was set into motion, and from this motion the planetary magnetic field was produced. But since, physically, the Earth's core provides resistance and turbulence between the inner and outer core. This resistance then in turn slows down the current and thus weakens the strength of the dipole field over time. For Pro to effectually refute my case, he must provide a reason why we should not accept Humphrey's model and why we should rather accept another such as the dynamo model. The data is quite clear that the Earth's magnetic field is decaying at quite a substantial rate, and if it truly is an exponential decay due to energy loss, then the biblical creation view of a less than 10,000 year old Earth is supported.