US Airways Flight 1549 Cockpit Audio

Listening to the cockpit audio of US Airways 1549 is pretty incredible. Listen to how cool Chesley Sullenberger, the pilot, is and how the air traffic controllers don’t really register what, “we’re going to have to put it down in the Hudson” means.

As if Chesley isn’t already a stud, check out this story.

Chesley Sullenberger has a problem. He borrowed a book from the Danville Library – and it’s overdue. To complicate matters, the book was an interlibrary loan from Fresno State.

Sullenberger contacted librarians and asked for an extension on the loan and a waiver on the overdue fine. The reason? The book is in the cargo hold of the US Airways plane that made an emergency landing last month in New York’s Hudson River. Sullenberger is the pilot who made that landing. No one was seriously injured.

Fresno State library officials were impressed with Sullenberger’s sense of responsibility… and waived all fines and fees, even the one for losing the book. The library’s going one step further: when the replacement book goes up on the shelf, it will have a special template in front, dedicating it to Chesley “Sully” Sullenberger.

Oh, by the way. The topic of that book? Professional ethics.

Earth Impact Effects

Here’s a follow up to my post yesterday on the asteroid Apophis. JPL has an interesting little calculator for calculating the effects of celestial bodies impacting with Earth.

After plugging in the parameters that Neal deGrasse Tyson mentioned (100m in diameter, impacting 500 miles away – in 3 miles of ocean), it yielded some pretty insignificant results (besides the tsunami that would be generated).

 

Your Inputs:

Distance from Impact: 805.00 km = 499.90 miles

Projectile Diameter: 100.00 m = 328.00 ft = 0.06 miles

Projectile Density: 3000 kg/m3

Impact Velocity: 17.00 km/s = 10.56 miles/s

Impact Angle: 45 degrees

Target Density: 1000 kg/m3

Target Type: Liquid Water of depth 4.57 meters, over typical rock.

Energy:

Energy before atmospheric entry: 2.27 x 1017 Joules = 5.42 x 101 MegaTons TNT

The average interval between impacts of this size somewhere on Earth during the last 4 billion years is 2.4 x 103years

Atmospheric Entry:

The projectile begins to breakup at an altitude of 54000 meters = 

177000 ft

The projectile reaches the ground in a broken condition. The mass of projectile strikes the surface at velocity 6.66 km/s = 4.14 miles/s

The impact energy is 3.49 x 1016 Joules = 8.33 MegaTons.

The broken projectile fragments strike the ground in an ellipse of dimension 0.81 km by 0.573 km

Major Global Changes:

The Earth is not strongly disturbed by the impact and loses negligible mass.

The impact does not make a noticeable change in the Earth’s rotation period or the tilt of its axis.

The impact does not shift the Earth’s orbit noticeably.

Crater Dimensions:

What does this mean?

The crater opened in the water has a diameter of 1.85 km = 1.15 miles

For the crater formed in the seafloor:

Crater shape is normal in spite of atmospheric crushing; fragments are not significantly dispersed.

Transient Crater Diameter: 1.12 km = 0.695 miles

Transient Crater Depth: 0.396 km = 0.246 miles

Final Crater Diameter: 1.4 km = 0.869 miles

Final Crater Depth: 0.298 km = 0.185 miles

The crater formed is a simple crater

The floor of the crater is underlain by a lens of broken rock debris (breccia) with a maximum thickness of 138 m = 454 ft.

At this impact velocity ( < 12 km/s), little shock melting of the target occurs.

Thermal Radiation:

What does this mean?

At this impact velocity ( < 15 km/s), little vaporization occurs; no fireball is created, therefore, there is no thermal radiation damage.

Seismic Effects:

What does this mean?

The major seismic shaking will arrive at approximately 161 seconds.

Richter Scale Magnitude: 5.2

Mercalli Scale Intensity at a distance of 805 km: 

  • Nothing would be felt. However, seismic equipment may still detect the shaking.

 

Ejecta:

What does this mean?

Most ejecta is blocked by Earth’s atmosphere

 

Air Blast:

What does this mean?

The air blast will arrive at approximately 2440 seconds.

Peak Overpressure: 138 Pa = 0.00138 bars = 0.0195 psi

Max wind velocity: 0.324 m/s = 0.725 mph

Sound Intensity: 43 dB (Easily Heard)

 

Best Photos of 2008

A lot of these are a rehash from my 2008 Year in Review, but this post is for the “Best Photos of 2008” blog topic that is being put together by San Francisco photographer, Jim Goldstein.

Laughter

I captured a picture of this girl and she ended up leaving a comment on SFist. It turns out, a few hours before the pillow fight, she went through her last chemo session for breast cancer. Her and her friends went out to the pillow fight to celebrate! How awesome is that?

No clue what this bird is...

African Crane at the San Francisco Zoo.

DSC_1791

Baboon at the San Francisco Zoo.

San Francisco - Dusk HDR

HDR image captured from the roof of our apartment.

San Francisco Olympic Torch Relay and Protests

Cops running to break up a fight during the Olympic Torch relay in San Francisco.

Monterey Bay Aquarium

Monterey Bay Aquarium

Trail to Hideaways Beach, Kauai

Beach in Kauai.

Red Sky at Night (Sailor's Delight)

Sunset in Kauai.

Trinity College - Dublin

Trinity College – Dublin, Ireland.

Hvar Island

Hvar Island, Croatia.

Korcula

Korcula, Croatia.

Old Town Dubrovnik from the City Walls

Dubrovnik, Croatia.

Chuck Ragan of Hot Water Music at The Regency in San Francisco, CA

Chuck Ragan, Hot Water Music.

Old School Golden Gate Bridge

Golden Gate Bridge.

Golden Gate Bridge Sunset

San Francisco Waterfront at Night

Blue Angels from the Roof of Our Apartment Near Downtown San Francisco

All Alone

California Academy of Sciences

Palace of Fine Arts

Golden Gate Bridge at Night

Coffee Shop Theater

Earlier this evening, I was in a coffee shop prepping for an interview that I have tomorrow afternoon. This older couple sits down next to be and are having a conversation. They sounded hilarious, so I decided to open up EccoNote Pro on my iPhone for a little clandestine recording.

Note: This only thing that’s been done to this file is increasing the playback volume. The voices aren’t garbled. That’s just how the guy really sounded! Awesome. Anyway, they chat for a bit, and then get up and walk out the door. Have a listen!

The MP3 file is 36 seconds long.

[audio:http://daveschumaker.net/wp-content/uploads/2009/01/crazy_coffee_shop.mp3]

(iPhone users can click here to download mp3)

According to this, I’m a robot.

According to this, I am a robot.

Seriously, is that NOT the word that I typed?!

These CAPTCHA systems are supposed to prevent automated scripts and robots from registering accounts on websites. If I fail it, does this mean I am a robot?

Two Interesting Articles


Our only home. Image by Aaron Escobar.

If you have time, you should read two interesting articles I’ve written over at the Geology News blog, that have been getting quite a bit of traffic and interest.

The article on Yellowstone examines the recent earthquake swarms and discusses the risk of an eruption. The second article on climate change offers a concise history of how we know it’s happening and the causes behind it.

Check them out!

Five Years in San Francisco

San Francisco - Dusk HDR

Happy Anniversary!

Exactly 5 years ago this weekend, I moved to San Francisco. It’s crazy how fast time has flown by. What an awesome experience it’s been so far!

Bicycle Rodeo!

MAKE Magazine is now on YouTube! Awesome! Check out this episode of MAKE TV about Cyclecide – a San Francisco art collective.