Showing posts with label WEATHER. Show all posts
Showing posts with label WEATHER. Show all posts

9 February 2023 - SEISMIC STATION BELOW THE BRONX

 


SEISMIC STATION 
BELOW THE BRONX

G'day folks,
 
 An unassuming stone building houses New York City's oldest seismic station almost 30 feet below the Bronx.

Fordham University’s Rose Hill campus is home to the oldest seismic station in New York City, and one of the oldest in the United States. Installed in the basement of the university’s main administrative building in 1910, it continues to chart seismic activity from all over the world to this day.

The station is maintained by Fordham’s physics department, where data is transmitted to the adjacent academic building, Freeman Hall. While mainly used by the physics department, that data is available to students across several disciplines, notably environmental science.

Originally, data was gathered using a Wiechert seismograph, a precarious pendulum-dependent machine that graphed vibrations using a system of levers, kerosene-smoked paper, a weight, and a rod. It was so sensitive that in order to avoid skewing data, a horse was kept on campus to maintain the grass outside of the station instead of usual lawn-mowers.

Of course, this seismograph has since been replaced by computerized broadband seismometers, which lie in a vault nearly 30 feet below the ground, picking up trembling of the Earth’s tectonic plates and even of trains heading to Grand Central from the nearby Metro-North Fordham stop.



 

About a decade after that first basement seismograph, Fordham constructed a new seismic station using money donated by William Spain, who then named it after his son, William, a physics student of the university who died some years before. While the actual seismograph is subterranean, it is inside a small stone cottage flanked by trees and wildflowers with a stone path leading to the entrance. There is a bronze plaque of St. Emidio on the observatory’s side, the patron saint of protection against earthquakes.

Today, the William Spain Seismic Observatory, using a strong motion detector, partners with a U.S. government program to assess earthquake risk in metropolitan areas. This particular data is also streamed to a government data repository in Boulder, Colorado. Fordham is also a member of the regional Lamont Cooperative Seismic Network, which allows the 21 other seismic-observatory members across the eastern U.S. to share data and equipment like geophones and seismometers for further research projects.

13 August 2022 - STRIP BENCHMARKS IN LAS VEGAS

 

STRIP BENCHMARKS

 IN LAS VEGAS


G'day folks,

These markers are used to determine the ground stability of the Strip. 

The Las Vegas strip is also known as the busiest street in the world with over 40 million visitors each year. So, it’s very important that its location is clear on maps and GPS.



 

This is typically achieved by surveyors who measure the exact location of several hundred points on the strip, each of them marked with a brass medallion. Besides serving as an absolute position marker, these benchmarks also help surveyors determine if the ground under the strip is stable with the weight of all the casinos surrounding it. 

Every decade or so, the points are measured to see if they have moved. If they have moved, this information is researched and the issue is corrected to ensure the safety of the guests and the buildings that line the strip.

Additionally, they signify the right of way for pedestrians, meaning that any car crossing the strip has to yield to pedestrians. 


 

7 August 2022 - ANCIENT WEATHER STATION STILL WORKS

 

ANCIENT WEATHER 

STATION STILL WORKS


G'day folks,

This 135-year-old weather station studies the effects of the climate on human health. 

Located in the last segment of the long green strip that connects the railway station to the old town of Zagreb, Trg Nikola Šubić Zrinski, also known as Zrinjevac, is said to be one of the most beautiful and romantic parks in the Croatian capital. It is also home to an unusual relic.

In 1884, the physician and amateur meteorologist Adolf Holzer built a meteorological column on the north side of the square, outfitted with scientific instruments to record temperature, humidity, and air pressure over time. 




 

Made of Istrian marble and designed by architect Hermann Bollé, this landmark reflects the habit of notable families to gift precious items to the city. But Holzer’s goal went beyond simply displaying his benevolence or gaining prestige. The data collected were used for his studies, which were viewed as revolutionary at the time, focused on better understanding the impact of a changing climate on human health. 

Today, more than 130 years after its construction, these extremely accurate, German-made instruments are no longer used for official measurements, but they continue to do their jobs, and people often stop by to check in on the local conditions. The weather station in Zrinjevac remains a valuable attraction for those who love to discover the most unusual places in the city.



 

12 December 2014 - THUNDERSTORMS


THUNDERSTORMS

G'day folks,

Here are some more photographs of thunderstorms, taken by amazing photographers around the world.

























































Clancy's comment: Now you can see why we photographers get so excited and start snapping at these natural marvels. Just gob smacking, eh?


I'm ...





















Think about this!


23 November 2014 - THUNDERSTORMS


THUNDERSTORMS

G'day folks,

As a keen photographer, lightning and storms are one of my favourite subjects. So, check out these marvellous shots from brilliant photographers.
















Clancy's comment: Amazing, eh? The beauty of nature, and the skill of extraordinary photographers with a sharp eye.

I'm ...







Think about this!