Oceanic tides are periodic sea-level oscillations driven primarily by the gravitational forces of the Moon and Sun and the Earth’s rotation, expressed as propagating long waves in the ocean basins. They are described as equilibrium and dynamic tides, with the latter governed by the Laplace tidal equations that incorporate Coriolis effects, bathymetry, and basin geometry. Tides are decomposed into harmonic constituents (e.g., M2, S2, K1), each with distinct frequencies and phases, enabling precise tidal prediction. They play critical roles in coastal dynamics, mixing, and energy dissipation, and are significant for processes such as sediment transport and ocean circulation.
Coastal flooding may seem unpredictable, a natural disaster that occurs randomly. But UCF researcher Ivan Haigh has found that recurrent coastal floods occur at highly predictable times.
Earth Sciences
6 hours ago
0
0
When high or low tide occurs, the water does not necessarily rise and fall uniformly along the entire coastline. In fact, the height of the tide in a bay can vary by up to one meter (3 feet) from one location to another just ...
Earth Sciences
Aug 30, 2026
0
27
Ocean tides push upstream along coastal rivers, in some cases reaching hundreds of kilometers (hundreds of miles) inland. These inland stretches are known as tidal rivers, and they're the scene of complex interactions between ...
Earth Sciences
Jul 14, 2026
0
9
A single monitoring network developed by McGill, Natural Resources Canada, Université du Québec à Montréal (UQAM) and Dalhousie University researchers can simultaneously track earthquakes, water behavior, human activity and ...
Plants & Animals
Jul 9, 2026
0
11
Extreme floods that once swamped coastal communities only rarely are becoming far more common as climate change caused by humans pushes sea levels higher, according to new research published Wednesday. Experts say the findings ...
Environment
Jul 4, 2026
1
91
Oceanic transform faults are strike-slip boundaries—faults that move horizontally rather than up and down and connect offset mid-ocean ridge segments. They have long been regarded as simple "conservative" plate boundaries ...
Earth Sciences
Jun 29, 2026
0
8
Life on Earth took a long evolutionary journey that eventually created us, the purportedly intelligent species that dominates the planet. But there was no grand plan or design, only happenstance, nature and luck. Life on ...
Planetary Sciences
Jun 24, 2026
0
339
In 1938 and 1944, two major hurricanes struck Long Island, and after the initial winds subsided, the surges came back unexpectedly hours later, leading observers to wonder whether this was a tsunami. In a study appearing ...
Earth Sciences
Jun 23, 2026
0
15
Human-caused sea-level rise has significantly increased the frequency of extreme coastal flooding worldwide, according to a new study led by a Tulane University researcher. The research, published in the journal Nature Climate ...
Earth Sciences
Jun 10, 2026
0
30
Our novel artificial intelligence model can predict extreme storm surges with high accuracy, including under future climate conditions. Because the AI model runs much faster, it can help researchers and practitioners better ...
Earth Sciences
Jun 9, 2026
2
8
