The distance a tsunami travels depends on various factors, including the initial energy, the depth of the water, and the coastal topography it encounters. However, I can provide you with a rough estimate based on some general considerations.
A tsunami is a series of waves that propagate across the ocean or sea. As it approaches shallow water near the coastline, the wave height increases, and it can travel much farther inland than in deeper water.
Assuming the 1,000-foot measurement refers to the initial wave height (crest to trough) of the tsunami, it is essential to note that tsunamis typically have much larger wavelengths (distance between two consecutive crests) and amplitudes (half the wave height).
On average, a tsunami wave might have a wavelength of about 100 kilometers (62 miles) and a speed of around 700 kilometers per hour (435 miles per hour) in deep ocean waters. However, as it approaches shallow water near the coast, the speed decreases, and the wavelength decreases while the wave height increases.
Considering these factors, we can estimate that a 1,000-foot tsunami wave might travel tens to hundreds of kilometers (or miles) inland, depending on the coastal topography and other local conditions. The exact distance traveled by a tsunami can vary significantly based on the specific circumstances, so it is challenging to provide an exact distance without additional information about the coastal geography and other relevant factors.