Menyambung informasi dari teman (lihat email dibawah), bahwa kemungkinan akan terjadi alga blooming yang beracun di daerah pesisir Sumatra Barat, tepatnya mendekati Kep. Mentawai dalam beberapa minggu ini. Upwelling sudah mulai terjadi disebabkan oleh pergerakan massa air dingin dari Selatan menuju utara pesisir Sumatra. hal ini pernah terjadi juga di tahun 1998. Mungkin temen2 yang berdekatan dengan site bisa membantu memonitor lokasi tersebut, sekaligus juga menjadi early warning system untuk teman2 yang berada di daerah sekitarnya.
Regards, Yul ----- Original Message ----- From: Jan H. Steffen To: Terangi Terangi ; Silvianita Timotius: Yul Sent: Monday, September 25, 2006 7:04 PMSubject: Fwd: High chlorophyll a and Low SST intensified at southwestern Sumatra Dear friends, please forward the news below to friends in Padang for potential follow-up: thereseems to be indication for a likely plankton bloom in the coming months of a similardestructive scale such as in 1998. Best regards, JanUNESCO Begin forwarded message: From: Chun Knee Tan <[EMAIL PROTECTED]> Date: 15 September 2006 08:28:01 GMT+02:00 Subject: High chlorophyll a and Low SST intensified at southwestern Sumatr a Dear all, Analysis results from JAMSTEC show the Indian Ocean Dipole (IOD) alomost reach thesame magnitude like 1994 and 1997-98 IOD. The latest MODIS Aqua satellite observation show the Indian Ocean Dipole (IOD)already caused lower sea surface temperature at southern latitude of westernSumatra. 24C water was observed off Mentawai Island. Very high chlorophyll a wasobserved at the southern tip of Sumatra. (see attachment) ?We are expecting thehigh chlorophyll a area will spread northward as the coastal upwelling continue tosupply nutrient into surface water.? During my past study in the Malacca Straits,the surface chlorophyll a will increase a week after the strong upwelling derivewind is observed. As the result, high chlorophyll a is predicted to be observed inMentawai Island within next few weeks or faster. ***Continous coastal monitoring needed along the Mentawai Island, as it have arecord of extreme harmful algae bloom during during past 1997-98 IOD. The presenthigh phytoplankaton level might develop into harmful algae bloom (HAB). For themarine scientist, it will be a good chance to investigate the theory of"Atmospheric Iron Input from haze" that cause the HAB in 1997-98. (http://www.sciencemag.org/cgi/content/full/sci;301/5635/952) ? ***Lower sea surface high might occur along the northeastern Indian Ocean as thecoastal Kelvin wave propagate at the eastern boundary. Seagrass and coralbleaching monitoring along northeastern Indian Ocean is strongly recommended. ? ? Let's pray for the people who is suffered by the IOD now. ? Thank you. ? ? Best regards, CK Tan UNU-GEIC Lautan Sati Rantau Batuah Sutan Palito Alam 33 th __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -------------------------------------------------------------- Website: http://www.rantaunet.org ========================================================= * Berhenti (unsubscribe), berhenti sementara (nomail) dan konfigurasi keanggotaan, silahkan ke: http://rantaunet.org/palanta-setting * Posting dan membaca email lewat web di http://groups.yahoo.com/group/RantauNet/messages dengan tetap harus terdaftar di sini. -------------------------------------------------------------- UNTUK DIPERHATIKAN: - Hapus footer dan bagian yang tidak perlu, jika melakukan Reply - Besar posting maksimum 100 KB - Mengirim attachment ditolak oleh sistem =========================================================
