Analisis Sea Level Rise Menggunakan Data Satelit Altimetri Jason-2 Periode 2008-1012 (Studi Kasus: Laut Utara Jawa Dan Laut Selatan Jawa)

Sea level changes carried by tidal observations at the beach. But, the method as it still has some shortcomings in some ways such as limited coverage areas around the coast so the sea face of changing data is only accurate for a relatively shallow sea close to the shore. The existence of tidal palm should be tied to the tidal station and measured by GPS in order to be bound by such a reference ellipsoid..Advances in the development of satellite technology, especially satellite altimetry is intended to observe ocean phenomena, has helped many observations of sea level temporally. To see the trend of changes in sea level rise do linear regression. Calculating the regression process SLA and linear trend analysis of the data altimetry satellite Jason 2. In this final project the results of this regression will be used also to compare the differences in sea level rise in the North Sea Java and South Sea Java. As long years 2008-2012 with satellite altimetry abservations shows that the phenomenon of sea level rise occurred in the North Sea Java and South Sea Java. Sea level rise occurred in the North Sea Java is equal +10.77 mm/yr. Lowest values occurred in Waters Semarang on pass number 64 is equal to +7.92 mm/yr and the highest occurred in the Waters of Madura on pass number 203 is equal to +15.84 mm/yr. For in the sea south of Java, sea level rise is at +16.79 mm/yr. Lowest values occurred in Waters Prigi on pass number 203 is equal to +12.60 mm/yr. As for the sea level rise occurred in the Waters of Cilacap is at +23.04 mm/yr

Pola Musiman Dan Antar Tahunan Salinitas Permukaan Laut Di Perairan Utara Jawa-Madura

Watermass of Java Sea is already known having a strongly connection with monsoon system in Indonesian region. Study of temperature valiability for and/or its relation to exploitation of marine and coastal resources have been done by scientists before hand. But the salinity condition is rare to studied, while the characteristic is important to the real life application. The sea surface salinity data archive, is primarily used in this study, is a monthly average within January 1994 – December 2010 by a spatial resolution of 1o x1o. Dataset of wind from ECMWF as a secondary parameter, have been monthly averages both for east-west (zonal) component and north-south (meridional) component, it is derived from 10 meters above sea level within period of January 1994 – December 2010, by a spatial resolution of 2.5o x 2.5o. Descriptive analysis have been done in order to get a complete picture of the SSS seasonal fluctuation. The results shows that SSS in Java Sea having a seasonal variability, which indicated by appearences of two SSS maximum and two SSS minimum annualy. Based on monthly average in the northern part of Java-Madura Seas, the SSS is haveing range of 32,0 PSU – 34,4 PSU. In the first transitional monsoon (Maret-April-Mei), SSS is relatively lower than others, i.e. NW monsoon, SE monsoon, and the second transitional monsoon, where it is found a core low SSS consentrated in the western part of Java Sea and also in south of Makassar strait

Observation of Coastal Front and Circulation in the Northeastern Java Sea, Indonesia

The structure and spatial extent of a coastal front and circulation in the shallow (<55 m depth) northeastern Java Sea in Indonesia was investigated with a new dataset of high-resolution conductivity-temperature-depth (CTD) and along-track shipboard acoustic Doppler current profiler (SADCP) during a DIKTI-LIPI 2010 joint research cruise on R.V. Baruna Jaya 8. The coastal front separates fresh warm coastal water derived mainly from Barito River discharge and the saline, cool Java Sea water. The surface fresh water plume extends approximately 760 km from the Barito River estuary to the south, and its thickness varies from the surface to 10 m and 20 m depth, depending on its proximity to the fresh water source. The front is aligned a northeast and east direction, probably related to a meandering of strong northeastward monsoon current in the eastern part of the Java Sea during the observation time

Analysis of Spatial Characteristic of Maritime Weather in Java Sea

Sea transportation continuity is mainly affected by the sea weather. The sea voyage may be disturbed by the unpredictable weather pattern. The rate of shipping accident that is caused by the bad weather shows a high percentage. Accordingly, the study of java sea wave characteristic is required. The java sea waters especially in the north side of Java Island, between Surabaya, Semarang Banjarmasin and Makassar is one of the most dense shipping lanes in Indonesia. Several big harbors such as tanjung perak of Surabaya and tanjung emas of Semarang serve high frequency of stevedoring and passenger loading/unloading. In previous researches, the sea weather predictor of java sea waters is still temporal. In this research, numerical modeling of SWAN is used to models the sea wave propagation direction and significant height of the wave in java sea waters. This model uses the concept of spectral energy balance to describe physical interaction that happened in the sea. Two scenarios are applicated in this simulation. in the first scenario, the input of wind speeds are given from 4 direction (west, north, east and south), while in the second scenario, the wind speeds are given according to the character of seasonal winds of the research object area

Multivariate Analysis of Pelagic Fishes in the South China Sea Area

Pelagic fishes are important fisheries resources in the South China Sea Area. The aim of the study is to determine the dynamics and status of pelagic fishes and develop the fishery management efforts for sustainable development in the region Three analytical methods, correlation analysis, principal component analysis and cluster -:analysis were used for this purpose. In this study, 19 species groups were considered and annual catch data were collected from SEAFDEC Fishery Statistical Bul1etins from 1976 to 1996. For estimation of MSY (Maximum Sustainable Yield) in the East Coast of Peninsular Malaysia, Schaefer's Surplus Production Model was used based on catch and effort data. In the case study of estimation of MSY, the estimated MSY was 94,321 mt and fMSY was 74,011 (days/year) by fishing gear standardization. This study estimated MSY-like value of the whole South China Sea provisionally based on studies done in the East Coast of Peninsular Malaysia. The correlation analysis showed the relationship among 21 sub-areas on the basis of catch composition per year .The study indicated that Taiwan, Hong Kong and Singapore did not show significant relationship with other sub-areas. However, West Sumatra, South Java etc showed significant relationship with other sub-areas. The principal component analysis showed alternation of the major species groups in different sub-areas. The analysis indicated that alternation of major catches .. were observed at two or four years interval while some species groups were found to be stable over the periods in different sub-areas. Alternation of pelagics by sub-area and by species are very important information as the baseline data for multicountry's fisheries management. The cluster analysis was used for grouping of sub-areas on annual basis and overall basis. The results of overall basis are summarized in the following two types of grouping. The first type of grouping is as follows: (1) Taiwan, Indonesian part of Malacca Straits, West Coast of Peninsular Malaysia, East Sumatra and Kalimantan; (2) Luzon, Visayas, Mindanao, Sulewesi & Gulf of Thailand; (3) Hong Kong, West Sumatra, North java, South Java, Bali-Nusa Tenggara, Maluku-Irian Jaya, East Coast of Peninsular Malaysia, Sarawak, Sabah, Indian Ocean and Singapore. The second grouping is that, all sub-areas were grouped into six clusters: (1) Taiwan;(2) Gulf of Thailand; (3) East Coast of Peninsular Malaysia & North Java; (4) Indonesian part of Malacca Straits, West Coast of Peninsular Malaysia; East Sumatra & Kalimantan; (5) Luzon, Visayas, Mindanao & Sulawesi and (6) Hong Kong, West Sumatra, South Java, Bali-Nusa Tenggara, Maluku-Irian Jaya, Sarawak, Sabah, Indian Ocean & Singapore. On the pelagic resources or shared stocks, this study emphasized the importance of multi-country's fisheries management and that detailed information is required to achieve the objectives. This study identified the fisheries relationships among the sub-areas, and also clarified the alternation of pelagics in the South China Sea area, based on the multivariate analyses. The important baseline information obtained from the study can be utilised for multi country's pelagic fisheries management in the South China Sea area

The Distribution and Potential Problems of Mimosa Pigra L. in Indonesia

Mimosa pigra L. (Mimosa asperata L.) of the family Mimosaceae is an introduced species from South America which is locally naturalized in Indonesia. The present known distribution sites are still restricted to Java, Sumatra, and Kalimantan. It is found in almost all provinces of Java and many heavily infested areas have been noted in Jakarta and West Java. The introduction of the plant to other islands has not been reported yet. The separation of the islands by sea is preventing the further spread of the plant in Indonesia. Control is basically occasional and on an individual basis. There is no sustained effort yet to control the plant. The urgency of controlling and restricting its spread cannot be over emphasized

Pemetaan Potensi Energi Angin Di Perairan Indonesia Berdasarkan Data Satelit QuikScat Dan WindSat

There were two kinds of monsoon winds in Indonesia. They are the east and the west monsoon winds. Both of them blow alternately in a year through the Indonesian territory. The velocity and energy of monsoon winds in Indonesian territorial sea were mapped by using MatLab program. The velocity and energy data were obtained by using QuikSCAT satellite from January 1999 until December 2009, meanwhile WindSat from January 2004 until December 2014. The results show that high energy of monsoon winds start from Indian oceans until Nusa Tenggara sea, then from Arafuru sea to Banda sea, Java sea, Karimata strait and the southern region of south Sulawesi

Significant Miocene larger foraminifera from South Central Java

The Gunung Sewu area of South Central Java, Indonesia during Mid Miocene, Langhian-Serravallian (Tf1-Tf2), was deposited in a large area of warm, very shallow-marine water. Coralline algae and abundant larger benthic foraminifera dominate the carbonate lithologies. Larger benthic foraminifera from previously unstudied sections in South Central Java are described and figured. They have led to an understanding of sequence stratigraphic and facies relationship of Miocene carbonates in Indonesia. Thirteen larger foraminifera species are described and illustrated. A detailed biostratigraphical studies of The phylogeny Katacycloclypeus annulatus - K. martini and the gradual evolution from Austrotrillina asmariensis into A. howchini are recognised. Analysis of the larger benthic foraminifera has allowed accurate dating of the carbonate sections studied using the East Indian Letter Classification

Influences of Upwelling Duration and Intensity Based on Sea Surface Temperature Anomaly Toward Primary Productivity Variability in Indonesian Waters

The existence of upwelling generally increases waters productivity. However, the influence of upwelling could be different based on location and time. The difference of upwelling duration and intensity (strength) can affect the variability of primary productivity in Indonesian waters. The estimation of primary productivity during the period of January 2000 to December 2007 was conducted using Carbon-based Production Model (CbPM). Sea Surface Temperatures (SST) Anomaly data on the same period was used as parameter to determine the upwelling conditions. The study locations were west coast of Sumatra, south waters of East Java to East Nusa Tenggara, Banda Sea, Gulf of Bone, Maluku Sea and Halmahera Sea. The results showed that in the south of East Java and Banda Sea have upwelling with longer duration (3–4 months) and higher intensity (decrease in temperature reached >2°C below average), the primary productivity was higher than other locations. Halmahera Sea showed the existence of upwelling only at certain time when El Niño occurred, while Gulf of Bone and Maluku Sea showed the occurrence of upwelling during southeast season only with 2–3 months of duration and vary intensity, which shown with the decrease in temperature ranging from 0,5–1,8oC below average. El-Niño and dipole mode in Indonesia waters generally caused longer duration and stronger intensity of upwelling producing more productivity than normal years

Thinking in Islands; the Portuguese Perception of the Indonesian Archipelago and Particularly of Sunda in Early Texts and Charts

This article discusses various early sources on the Indonesian archipelago. It starts with the status of knowledge before the first voyage of the Portuguese to the Moluccas from accounts of travellers to insular Southeast Asia in the Middle Ages and the picture on world maps European cartographers produced. Comparing that view with text sources and the resulting geographic material of the first expeditions by the Portuguese provides an insight into contemporary mechanisms of knowledge transfer. Certain effects can be traced and are repeated on different levels of access to the original facts mainly because most maps were drawn up in Europe but based on the geographic description provided by text accounts. An abundance and multiplication of failures and mistakes is evident and is partly related to the scarcity of sources and due to reproduction techniques