Along coastlines, where tides are typically magnified, they profoundly affect navigation, commerce, coastal flooding, water properties and sediment transport. Tides impact the flooding of rivers and, thus, influence the extent of their floodplain, which has cascading effects on biogeochemical and ecological processes.
I've wanted to be an ocean swimmer ever since I moved to Sydney. The idea of getting out past the waves and braving the elements excited me. I would tell anyone who would listen: Once I live closer to the beach, I'm going to be out there. Just you wait. I've lived walking distance to the beach for more than a year now. During this time, I've read a lot about ocean swimming: how swimmers overcame challenges or life-altering moments.
On September 14, Alejandro Carranza, a 42-year-old fisherman, set out to sea from a remote town in La Guajira, Colombia's northernmost province, bordering Venezuela. It was an ordinary fishing trip, in search of tuna and marlin, said Leonardo Vega, a childhood friend and the president of the fishing association Carranza belonged to. But this time, Carranza never returned.
There's something romantic about sailboats that still speaks to us in this hyper-connected age. The idea that you can harness nothing but wind and water to glide across the ocean feels almost magical. But here's the reality check: even the most old-school sailor needs power these days. Your GPS has to stay on, your radar needs juice, those navigation lights aren't optional, and let's be honest, nobody wants to lose their phone charge mid-voyage.
A team of geologists has found for the first time evidence that two ancient, continent-sized, ultrahot structures hidden beneath the Earth have shaped the planet's magnetic field for the past 265 million years. These two masses, known as large low-shear-velocity provinces (LLSVPs), are part of the catalog of the planet's most enormous and enigmatic objects. Current estimates calculate that each one is comparable in size to the African continent, although they remain buried at a depth of 2,900 kilometers.
The population of super-Earths and sub-Neptunes, and the origin of the radius valley that separates these two classes of planets, is best explained by cores that are made of an Earth-like composition without a substantial amount of accreted ice8,9,10,11. For sub-Neptunes, the hydrogen-rich envelope overlies the rocky core for billions of years, whereas for super-Earths, the envelope may be retained for about 100 Myr (refs. ).
Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast as well as San Francisco County are under a beach hazards statement which was released by the National Weather Service on Thursday at 12:13 p.m. The statement is in effect until Monday Feb. 2, at 9 a.m. An increased risk of sneaker waves and strong rip currents with breaking waves of 14 to 19 feet, can be expected according to the NWS San Francisco CA.
