How is coastal erosion impacting life in San Diego? | NBC 7 San Diego
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- Опубликовано: 6 май 2024
- NBC 7 explores coastal erosion and the threat to people, property & infrastructure along San Diego’s coastline.
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As the richest homes fall into the ocean, we need to reclaim the coast for the public. No more selling oceanfront property to the rich never again.
Absolutely 💯
Term limits on politicians.
I live on Maui and grew up in Hawaii. 80% of Maui’s beaches threatened by erosion. Maui already 20% of its beaches. I still remember a beach in front of the Sheraton Waikiki in the 60’s. It’s under 6 feet of water with levies along certain areas Waikiki.
Also tenpatures in the tropics are now reaching 106f or higher from the brutal heat waves.
Dirt next to water = erosion ????????????
😂I know right. Go figure. Need satellites and data doe and robots doe. Fascinating. Hahahaha
Genius evaluation
These first few comments really lowered my outlook on our species' survival
😂
Human’s are not an advanced species
@@Sabrina-vu9mv not funny
Thank you for all you do for the sake of our environment.Many more blessings 🙏
From a 1985 U of Cal publication:
The information presented in this small volume is unique in that it represents probably the most complete study ever done of any coastline. It includes the history of erosion, the development of its beaches, and the retreat of its cliffs. In our description of the various coastal areas of San Diego County, we have illustrated the problems confronting coastal planning of future development, relating what has happened in the past to what may recur in the future.
The coast of San Diego County is of two principal types. In the northern part and extending as far south as La Jolla, the coast is cliffed, with raised terraces and beach ridges. The cliffs and terraces at the northern end rise to several hundred feet in the central portion. This section of coast is cut by a series of relatively large valleys with partly filled estuaries at their mouths and barriers at their lower ends. The southern portion of this area has mostly lowlands with large estuaries, deltas, and barrier islands, the history of which has been investigated with special interest.
The sea cliffs consisting of unconsolidated alluvium that are directly exposed to attack from the open sea normally experience erosion on the order of one or more feet per year and locally as much as ten to fifteen feet during a single large storm, as experienced in late January 1983. This rapid erosion, however, did not occur during the mild winters that lasted from the late 1940s until 1977, and in much of the area, this has led to a deceptive indication of cliff stability. We have found that more consolidated sea cliffs, such as well-cemented sandstone, often give a false appearance of long-term stability. Cliff erosion in sandstone, for the most part, is episodic, where long periods of little change may be followed by large landslides, causing many feet of retreat in a short time. Also, cliff erosion may occur on account of the solution by groundwater, precipitated by the extreme watering of non-native vegetation such as iceplant, which has a high water retention, or from leach lines, and the watering of lawns, which may amount to the equivalent of fifty to sixty inches of rain per year (Sorben and Sherrod 1977). The rise in the groundwater table that accompanies urbanization inland from the bluffs is producing a far greater rate of cliff erosion than had been thought possible. Sea caves enlarge and even collapse during storm conditions. Other caverns have been discovered under some buildings along the bluffs and are apparently the result of solution of the cement of the underlying fractured sandstone. Still other caves are seen to erode by groundwater and constitute a menace to the bluff dwellings.
Recent large landslides, particularly those in the high cliffs north of La Jolla, are of special note, as they occurred even during drought years as a result of groundwater and so illustrate this great danger to coastal cliff dwellings. The surprising changes that have occurred in some beach communities along the bluff top are due to surface water. From Oceanside southeast through Encinitas, a distance of fifteen miles, formerly large sandy beaches have now been replaced by cobbles, which for the most part were observed to come from offshore. These cobbles and even large rock riprap, the latter designed to protect the shore, may be thrown by relatively small waves against the buildings they were designed to protect, as documented during the storms from January to February 1983. Similarly, the beach constituting the long strand south of Coronado has a history that shows how the activities of man can effect an amazing change in the character of the shoreline.
A particularly horrifying aspect of our studies is the evidence of great floods and terrible storms in the past century, and the realization that a recurrence of these conditions in the future would be disastrous to the economy of southern California coastal valleys and lowlands and, in fact, to the life of our community.
An in-depth examination of weather records for the period following the great explosive volcanoes in the past, notably Krakatoa in 1883, shows us how the weather seems to undergo the most remarkable changes within two or three years of these major eruptions. Since we are clearly in the middle of one such volcanic episode, it is particularly interesting to note that in the year since the eruption of El Chichon in Mexico, we have experienced some terrible storms here in southern California and throughout the world, and some of the worst floods on record have occurred, notably in the Mississippi Valley. Awful hurricanes of record destructive force have hit the Hawaiian Islands and French Polynesia, and almost continuous downpours on the coast of Chile and Peru have caused floods such as have been unknown there previously. La Jolla had one windstorm greater than any experienced in many decades, which produced serious damage to coastal structures. The Seine River overflowed near Paris, and even worse flooding occurred in the vineyards in the south of France and in large cities all along the Rhine River in Germany. The worst snowstorms on record have been hitting the Colorado Rockies, and yet New England had an amazing period of warm weather during the early winter of 1982-83 which almost ruined ski resorts because of a lack of snow. As of April 1983, this same area suffered the coldest, snowiest spring of record. In 1982 New York had the warmest daily temperatures for December in 150 years of record-keeping. This was followed by one of their worst snowstorms, which almost paralyzed the city for days. On 19 April 1983, nearly sixty new record low temperatures were set from the Great Lakes to the Gulf Coast.
These are just the most significant of the amazing weather changes that have been evidenced in the early stages of the present volcanic episode, and they are clearly the same sorts of disasters that followed the eruption of Krakatoa in 1883. The picture that emerges is not very encouraging, but it is hoped that future developments may at least benefit from what has been learned by observing the past and what is occurring at the present. Through this, southern California may be encouraged to provide better flood control channels and reservoirs wherever possible, and to prepare for the great storms which might recur in the not-too-distant future, following future volcanic episodes. It is also hoped that long-range weather forecasters of the future will use this historical information as an aid to their prediction methods.
Futility
All the options currently being utilized to slow costal erosion don't incorporate into calculations the sharp rise in sea level expected in the coming decade(s).
The problem as it is today cannot be stopped and it is going to be unfathomably worse in short order.
Retreat from the coast. It is the only cost effective and viable option.
We moved to the North Coast and prepared the house we bought for extreme weather. So far, so good.
Granted, I'm more familiar with the Atlantic coast, but I think they've low-balled the scale and timing of the rise. At more than a dozen tide gauges spanning from Texas to North Carolina, sea levels are at least 6 inches higher than they were in 2010.
We must decide what cities to keep or build levies around East coast. Hawaii discussing same issues. Mother Nature will eventually win. Sometime in the future we must move away from the coastal areas
The USA with high inflation and high debt with high interest rates, no money to be proactive.
The United States Gov't has a Sovereign Currency, it can never run out of Money or Default Involuntarily on any promised distribution of funds. 🤣🤣🤣🤣🤣🤣Why is America so Economically Illiterate.
We have enough Data, we need to stop burning Fossil Fuels.
🤔....... Fear = money and power 🤷..... Can't fix sewage migration from Mexico, so we're going to something more complex..... people can move, hence Native Americans, from the coast to the mountains ⛰️ to the desert 🏜
Ain't knowbody talking about the impending earthquake 😳......Nature does what nature does....overcome, adapt and overcome.
Over 50 years ago these problems were talked about all the time. California's going to fall in the ocean.
Ecology. Been going on for millennium.
Sucks for them.
Rich people problems
Rock wall/wave breaker like every other coastal city who takes taxpayer dollars to prevent sand erosion?
Corporate Media is so Funny, Humans do not have "Decades to Come" they have maybe two Decades left at most. 🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
All the pollution in the ocean is scary. Everything ends up in the ocean. Lots of 3rd world countries with no money dump everything into the ocean
Quit whining !!!!
They want us to pay for their million dollars view ?
BILLION dollars!!! It costs BILLIONS of dollars now to live at the beach!!! A MILLION dollars these days gets you a shack in the desert!!!
Yep ......pandering for special money, under global warming.....🤐...climate change.....SANDAG....if California can't track 24 Billion on homless spending.....how they going to track rehab projects....sounds like an open check book
Dump ice cubes in the ocean 😂
Oh No! Rich Folks homes tumble into the Sea, what a Horror! 🤣🤣🤣🤣🤣🤣
So sad for the rich spoiled ppl that are causing global warming. Dont expect poorer tax payers pay for your 💩 unless i can move in a share your view
Don't idolize the wreckers
You buy the products and services from those rich people.