Skip to main content

Strange Underwater Sounds

A while back I wrote a post about the 52 Hz Whale, and this post is going to be like that one, on the subject of strange underwater sounds.

BLOOP
Soectogram of the Bloop

In 1997, the NOAA recorded an extremely strong underwater sound with an ultra-low frequency. Today, it is known as the "bloop" because of the sound of it. The sound was recorded off the west coast of South America. The NOAA said of the sound: "It rose rapidly in frequency over about one minute and was of sufficient amplitude to be heard on multiple sensors, at a range of over 5,000 kilometers (3,000 miles)." The NOAA did not believe that something man-made created the sound. So what was it, being several times louder than the sound of a blue whale, the largest recored animal?

The official answer is that it is nothing more than an icequake. But, there are some who think it may be a massive animal, a true leviathan. Dr. Christopher Fox of the NOAA has said that it may actually be from an animal. David Wolman, a journalist, describes Fox's idea:

"Fox's hunch is that the sound nicknames Bloop is most likely to come from some sort of animal, because its signature is a rapid variation in frequency similar to that of sounds known to be made by marine beasts. There's one crucial difference, however: in 1997 Bloop was detected by sensors up to 4,800 kilometers (3,000 mi) apart. That means it must be far louder than any whale noise, or any other animal noise for that matter. Is it even remotely possible that some creature bigger than any blue whale is lurking in the ocean depths? Or, perhaps more likely, something that is more efficient at making sound?"

Why would it be impossible for something bigger than a blue whale to exist? The oceans are a vast, largely unknown place.

UPSWEEP
Upsweep

The NOAA first recorded this odd sound in 1991. Called the "Upsweep," it "consists of a long train of narrow-band upsweeping sounds of several seconds in duration each. The source level is high enough to be recorded throughout the pacific."

Since 1991, the source level of the sound has decreased but it can still be heard, and appears to reach peaks in the spring and autumn.

JULIA

On March 1, 1999, the NOAA recorded a sound called "Julia." The sound lasted 15 seconds and was loud enough to be heard over the whole Equatorial Pacific Ocean autonomous hydrophone array. The NOAA's conclusion concluded the sound most likely come from a large iceberg that had run aground in Antarctica.
Julia spectogram

SLOW DOWN
Slow Down

The "Slow Down" was recorded by the NOAA on May 19, 1997. The sound lasts several minutes and decreases in frequency over that time (hence the name). The sound, like Upsweep, has been recorded each year since '97. Again, it is thought to be from a large iceberg.

WHISTLE
Whistle

The Whistle was recorded by the NOAA on July 7, 1997. It is "mysterious audio of what resembles distant whirring." It is thought it is caused by eruptions of underwater volcanoes.

TRAIN

The "Train" sound was recorded on March 5, 1997. Again, the NOAA concluded it is likely from a large, grounded iceberg.

Train sound


BIO-DUCK

The "Bio-Duck" sound was first detected by submarines in the 1960s. It was recorded in the open ocean, along the Australian coast, and Perth Canyon. It has now been identified as coming from Antarctic minke whales.

Comments

Popular posts from this blog

Mountain Monsters - Coming Back in 2018?

Destination America's Mountain Monsters was a huge hit when it premiered in 2013. It's had five seasons through last year.

Season 3 started a "Bigfoot Edition" and season 4 introduced a "rogue team." Last season focused entirely on this "rogue team" and ended with really no conclusion.

Over the past 2 Saturdays, some old season 2 episodes of Mountain Monsters have been playing in the evenings. Could this be a sign that the show might be back for another season this year, or does it have no meaning at all?

If the show does come back, where can they go? Last season made absolutely no sense at all and the whole thing was pretty stupid. If it does come back, I think they should go back to just monster hunting like they did in the first two seasons. Once they went to just "Bigfoot Edition" things went downhill quick.

Some Thoughts on Alaska Monsters: Bigfoot Edition

So far, two episodes of Alaska Monsters: Bigfoot Edition have aired. Here are some of my thoughts on the show.

First off, let's start with the team, the Midnight Sons. There are a few new members on the team this season. The old leader, Little Bear, is gone, and now Crusty (the guy with the bear claw in his beard) is leader of the team. Other members are: Dudley (new guy), the team "forensic expert," Todd, the "trap engineer," Bulldog (new guy), the "survival expert," Rhett, the "greenhorn" (rookie), and of course Face, the "veteran tracker."

Compared to the AIMS Team of Mountain Monsters, Crusty is Trapper, Todd is Willy, Rhett is Buck, Bulldog would probably be Huckleberry, Dudley would probably be Jeff, and Face would be Wild Bill.

I haven't seen the first episode, "Bigfoot of the Arctic Circle: Siberian Giant," but I did watch episode two, "Bigfoot of Denali: Wind Walker" last Saturday. I actually though…

Review - Invasion on Chestnut Ridge

Small Town Monsters' 5th film, Invasion on Chestnut Ridge, comes out soon. STM director Seth Breedlove let me check out an advance copy of the film to put up a review on here. Though I've been quite busy for about the last month and a half, I finally got a chance to check out the film, and these are my thoughts on it.

Invasion is about the strange happenings along the Chestnut Ridge in Pennsylvania. Local residents who have had strange encounters are interviewed, as well as researchers Stan Gordon and Eric Altman.  Along the ridge, witnesses have reported ghost lights, UFOs, Bigfoot, werewolves, thunderbirds, and many, many other odd things.

Many well known sightings happened in the early 1970s, when reports of UFOs and Bigfoot were very frequent. The strangest thing of all this was that sometimes the two would be seen at the same time, or shortly after on another. Some witnesses even saw a white colored Bigfoot that was holding a ball of light.

On another occasion, two Bigfo…