Friday, November 14, 2008

Monster Aneh di Ancol Beredar di YouTube

Heboh monster air di Ancol beredar di Internet. Dalam video yang direkam dengan terencana berdurasi 3.16 menit, ditampilkan bagaimana gerombolan makhluk kecil di tepi pantai menghabiskan bangkai ikan segar dalam waktu singkat layaknya seekor piranha.
Heboh monster air di Ancol beredar di Internet. Dalam video yang direkam dengan terencana berdurasi 3.16 menit, ditampilkan bagaimana gerombolan makhluk kecil di tepi pantai menghabiskan bangkai ikan segar dalam waktu singkat layaknya seekor piranha.
Rekaman yang dibuat Bocah Petualang Production ini diambil pada malam hari. Adegan dimulai dengan melemparkan seekor bangkai ikan ke air. Spontan makhluk-makhluk kecil yang berjalan cepat mengelilingi bangkai tersebut dan mulai mencernanya secara berkoloni. Untuk melepaskan makhluk-makhluk tersebut dari bangkai yang tersisa terlihat sulit bahkan dengan api dari tetesan sedotan yang dibakar.
Ketika dikonfirmasi tentang kabar tersebut, pihak pengelola tempat hiburan Taman Impian Jaya Ancol membantah tentang adanya sejenis ikan ganas mirip Piranha di perairan Ancol, Jakarta Utara. Namun, pihak pengelola menyatakan akan melakukan pemeriksaan di lapangan.
"Tidak ada pengunjung Ancol yang diserang. Kita tidak tahu itu jenis ikan apa. Tapi kita akan cari tahu," kata Corporate Communication Manager PT Pembangunan Jaya Ancol, Sofia Cakti di Jakarta, Kamis (13/11). Hal tersebut dikemukakan Sofia menanggapi maraknya isu bahwa makhluk tersebut dikhawatirkan membahayakan keselamatan manusia, khususnya yang berlibur di sekitar pantai Ancol.
Menurut Sofia, informasi tentang monster air tersebut diragukan kebenarannya. Selain tidak ada laporan resmi tentang makhluk tersebut, juga tidak pernah ada satu pun yang pernah menjadi korban. Kendati demikian, ungkapnya, pihak Taman Impian Jaya Ancol akan melakukan pemeriksaan di lapangan.
Salah satu upaya yang telah dilakukan di antaranya melakukan pengukuran PH kawasan tepi pantai di sepanjang pesisir Ancol. "Sekaligus itu inspeksi rutin. Kami bekerjasama dengan Badan Pengawasan Lingkungan Hidup Daerah (BPLHD)," tambah Sofia.
Sementara itu dari teks yang menyertai video tentang ikan ganas di YouTube menyebutkan, para nelayan di perairan Ancol menamai jenis ikan kecil namun ganas itu sebagai 'Kutu Air'. Dalam Wikipedia disebutkan bahwa sebagian kutu air (water flea) memang memengsa serpihan bangkai meski umumnya makan plankton dan alga.
kompas online

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Thursday, November 13, 2008

Sun Shows Signs Of Life: Long-Awaited Solar Cycle 24 Starting To Take Off

ScienceDaily (2008-11-12) -- After two-plus years of few sunspots, even fewer solar flares, and a generally eerie calm, the sun is finally showing signs of life. "I think solar minimum is behind us," says sunspot forecaster David Hathaway of the NASA Marshall Space Flight Center.

His statement is prompted by an October flurry of sunspots. "Last month we counted five sunspot groups," he says. That may not sound like much, but in a year with record-low numbers of sunspots and long stretches of utter spotlessness, five is significant. "This represents a real increase in solar activity."

Even more significant is the fact that four of the five sunspot groups belonged to Solar Cycle 24, the long-awaited next installment of the sun's 11-year solar cycle. "October was the first time we've seen sunspots from new Solar Cycle 24 outnumbering spots from old Solar Cycle 23. It's a good sign that the new cycle is taking off."

Old Solar Cycle 23 peaked in 2000 and has since decayed to low levels. Meanwhile, new Solar Cycle 24 has struggled to get started. 2008 is a year of overlap with both cycles weakly active at the same time. From January to September, the sun produced a total of 22 sunspot groups; 82% of them belonged to old Cycle 23. October added five more; but this time 80% belonged to Cycle 24. The tables have turned.

At first glance, old- and new-cycle sunspots look the same, but they are not. To tell the difference, solar physicists check two things: a sunspot's heliographic latitude and its magnetic polarity. (1) New-cycle sunspots always appear at high latitude, while old-cycle spots cluster around the sun's equator. (2) The magnetic polarity of new-cycle spots is reversed compared to old-cycle spots. Four of October's five sunspot groups satisfied these two criteria for membership in Solar Cycle 24.

The biggest of the new-cycle spots emerged at the end of the month on Halloween. Numbered 1007, or "double-oh seven" for short, the sunspot had two dark cores each wider than Earth connected by active magnetic filaments thousands of kilometers long. Amateur astronomer Alan Friedman took this picture from his backyard observatory in Buffalo, New York:

On Nov. 3rd and again on Nov. 4th, double-oh seven unleashed a series of B-class solar flares. Although B-flares are considered minor, the explosions made themselves felt on Earth. X-rays bathed the dayside of our planet and sent waves of ionization rippling through the atmosphere over Europe. Hams monitoring VLF radio beacons noticed strange "fades" and "surges" caused by the sudden ionospheric disturbances.

Hathaway tamps down the excitement: "We're still years away from solar maximum and, in the meantime, the sun is going to have some more quiet stretches." Even with its flurry of sunspots, the October sun was mostly blank, with zero sunspots on 20 of the month's 31 days.

But it's a start. Stay tuned for solar activity

sciencedaily

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