Manokwari Regency is one of the districts in West Papua Province which has the potential for moderate to high Tsunami vulnerability. One of the vulnerable districts is East Manokwari District. Potential disaster vulnerability in an area should be followed by community preparedness. This is because when a disaster occurs, the community already understands what steps to take. This study aims to determine the level of overall preparedness of the community in Pasirido Village, East Manokwari District. This research was conducted for one month in January 2021 in Pasirido Village, East Manokwari District, Manokwari Regency. This research uses quantitative methods. The sample was determined using the method of puposive sampling with the category of the head of the family and has lived for 10 years in Kampung Pasirido so that a total sample of 30 respondents. Data collection was carried out by distributing questionnaires and interviews to respondents. The questionnaire used is a standard from LIPI-UNESCO / ISDR 2006 with parameters of knowledge and attitude (KA), emergency response plan (EP), disaster warning (WS), and resource mobilization (RMC). The results showed that the level of community preparedness on the parameters of knowledge and attitude was mostly in the very ready category of 67%. The level of community preparedness in the parameters of the emergency response plan was mostly in the very ready category of 60%. The level of community preparedness for disaster warning parameters in the very ready category was 93%. The level of community preparedness on the parameter of resource mobilization was mostly in the ready category of 80%. Based on these four categories, overall community preparedness for flood disasters is included in the very ready category of 77%. The recommendation of this study is the need to increase community preparedness by conducting training to simulations from related agencies to the community. This is so that all people in Pasirido Village are in the category of being very prepared to face the Tsunami disaster.

The issue that surfaces from the digging of limonite and saprolite zones on nickel ore mining is the oxidation of chromium to chromium hexavalent. The aim of this research is to analyze the efficiency level of phytoremediation technology to reduce chromium hexavalent on waste water of nickel ore mining industry. This study was done in situ to observe the potential of Water Lettuce (Pistia stratiotes) using self-designed experimental devices.. This research was divided into three part, such as the variation of plant’s weight of 10grams, 20grams, 30grams, 60grams, 70grams, and 150grams with interval of an hour for five hours, variation of chromium hexavalent of 0.5ppm, 1ppm, 2ppm, 5ppm, and 7ppm with interval of 4 days for 20 days, and variation HRT 1.5 hours, 2 hours, and 3 hours with interval of 24 hours for 16 days. The result of this research shows the average of efficiency on observation one, two and three are 18.5%, 89%, and 28%. The usage of phytoremediation technology shows the potential to reduce chromium hexavalent pollutant.

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Land Surface Temperature (LST) is average temperature of an element of the exact surface of the Earth calculated from measured radiance which depends on the albedo, the vegetation cover, and the soil moisture. Land Surface Temperature can affect human discomfort, health problem, higher energy bill and further reduce the habitability of urban and sub urban area as Makassar city has been recently undergoing massive urban development.  This study tries to monitor and estimate Land Surface Temperature by using Landsat 8 TIRS and the data analyzed by vegetation index, and temperature index in order to derive Land Surface Temperature value. The result shows that the vegetation area declined around 3470 hectares in the last four years while the urban area increased approximately 1509 hectare. In addition, 2015, Makassar, South Sulawesi, Indonesia are experienced the highest temperature at 32 degree Celsius while 2019 shown that the maximum heat reached 29 degree celsius. However, the moderate and high temperature (26 – 29 degree Celsius) in 2019 expand and cover wider area than in 2015 as the area of vegetation declined and built-up area increased significantly

The use of chemical-based wastewater treatment method may cause harm to the environment. The aim of this research is to identify the flow application of wastewater treatment using phytoremediation method and summarize the perspective from stakeholders regarding the application based on long-term and short-term categories. In-depth interview was done with expert stakeholders from the sectors of government, private and academics. Subsequently, the scenario of wastewater treatment and the result of phytoremediation research that will be applied on nickel ore extraction industry were confirmed. Finally, a summary of the in-depth interview is shown on a form of a figure. The result shows that this method application needs effort and decision making from the company’s part that become the short-term issue for the company. However, on long-term side, phytoremediation is able to benefit the environment, social, and economy.