Decreased seismicity; fires detected on satellite imagery. Solche Kleinigkeiten werden gern genommen und das Lächeln, dass ihr dafür erntet, ist unbezahlbar. Near the hot sublacustrine spring the temperature was as high as 61.7°C and the pH was 0.60. During this period, volcanic activity was restricted to persistent degassing of the solfatara (sulfurous fumarole) located on a small dome in the SE part of the crater (figure 7). Shallow volcanic earthquakes showed the greatest increase. It completely disappeared during an eruption dating 50,000 years ago leaving a huge caldera named Kendeng. 198, Issues 1–2, pp. The lake waters had changed color from whitish light green to completely white. One small explosion earthquake was recorded during the week of 28 January-3 February. According to Wikipedia, miners carry loads of sulfur ore blocks ranging from 75 to 90 kg up a steep trail to the crater rim and then 3 km down the mountain to a weighing station. 2004: June Lade uns auf einen Bali Kopi ein, damit wir genügend Energie für den nächsten hilfreichen Artikel für dich und all die anderen reisefreudigen Menschen da draußen haben! References. No accurate measurements were made until summer 2008. | May Table 7. Vielen Dank. Volc Surv Indonesia, 1:50,000 geol map. Earthquakes and plumes reported at Ijen during 27 May-8 September 2002. East Indian Volc Surv Bull, 95-98: 1-110. Kennst du die Story hinter Osingvacation? 2014: August Many other post-caldera cones and craters are located within the caldera or along its rim. Das Abenteuer beginnt: Der Aufstieg zum Kawah Ijen. Today, most of the world’s sulfur is produced as a byproduct of oil refining and natural gas processing. Seismicity continued at the same low level as the previous week. On July 14–15, 2008, explorer George Kourounis took a small rubber boat out onto the acid lake to measure its acidity. At the crater lake, debris (probably native sulfur) seen floating on the surface was judged as likely derived from emissions vented into the ~180-m-deep lake (Takano and others, 2004). The chief of the national park was reported as saying, "There have been sulfuric rocks coming out of the edge of the crater and the fluid in it [crater lake] has turned from green to white and it has emitted hot foam. In der Ferne sieht man außerdem eine rote Lavawolke, vom Nachbarvulkan Raung. The number of shallow volcanic earthquakes decreased in comparison to the previous week. As in 2006 (BGVN 32:02), SP surveys were conducted on the summit rim and also down the S flank to the intersection of the Banyupuhit river (dashed line, figure 8) and the main road. Kawah Ijen's noteworthy features include a mineral-rich acid lake and fumarolic sulfur in sufficient abundance to support active mining (see photos in Krafft and Krafft, 1979). In 1817, the crater lake collapsed, producing mudflows that destroyed three villages and 90 houses. Schwefelarbeiter ist ein harter Job, naturlich und verdienen sie zu wenig Geld. Coffee … Unvorstellbar für uns! The Alert Level remained at 2 (on a scale of 1-4). VSI stated that earlier, during 2-8 July, seismic and explosive activity had increased and the Alert Level had been raised from 1 to 2 (on a scale of 1-4). Sternenhimmel mit Aussicht auf den aktiven Vulkan Raung. A survey of sulfur dioxide (SO2) fluxes was made using a portable UV spectrometer (FLYSPEC) on 11, 12, and 27 July 2007 along the SE rim of the crater (~ 2,350 m elevation) and involved, respectively, eight, sixteen, and seven walking traverses under the plume with the instrument pointed upwards. Um ein Uhr morgens wurden wir von unserem Guide und einem Fahrer an unserem Hotel abgeholt. 1/2, p. 14. Manchmal zahlen wir gerne ein paar Euro mehr, wenn wir dafür etwas an das Land zurückgeben können. Volume of products, eruption cloud height, and qualitative observations are used to determine the explosivity value. An eruption in 1772 caused the northeast flank to collapse producing a catastrophic debris avalanche that destroyed 40 villages and killed nearly 3,000 people. Clicking on the small images will load the full 300 dpi map. Most of the eruptions were phreatic. 07/1989 (SEAN 14:07) High-pressure steam emission, but little seismicity, 03/1991 (BGVN 16:03) Slight increase in crater lake temperature; tremor episodes, 04/1991 (BGVN 16:04) Crater lake changes from gray and bubbling to light green, 05/1992 (NASA STS 49) Infrared Space Shuttle photograph shows caldera and crater lake, 07/1993 (BGVN 18:07) Phreatic eruptions from the crater lake, 05/1994 (BGVN 19:05) Additional details about July-August 1993 phreatic activity, 07/1994 (BGVN 19:07) Minor phreatic eruption in February described, 06/1997 (BGVN 22:06) Late-June interval of increased seismicity; lake color changes, 08/1997 (BGVN 22:08) Elevated seismicity during 27 June-11 July; lake-color shifts and odors, 11/1998 (BGVN 23:11) Recent measurements of acid crater lake, 07/1999 (BGVN 24:07) Two phreatic eruptions at the active crater lake on 28 June, 09/1999 (BGVN 24:09) Increased seismicity since April 1999; white plumes and phreatic eruptions, 10/2000 (BGVN 25:10) Low-medium density ash emission; elevated seismicity with continuous tremor, 09/2001 (BGVN 26:09) Heightened seismicity through at least September 2001, white-gray plume to ~100 m, 12/2001 (BGVN 26:12) Higher-than-normal seismic activity from October 2001 through at least 6 January 2002, 04/2002 (BGVN 27:04) Continuous tremor, volcanic and tectonic earthquakes through April 2002, 08/2002 (BGVN 27:08) Small explosion in late July 2002 accompanies increased seismicity; ash emissions, 11/2002 (BGVN 27:11) Above-background seismicity through at least 8 December 2002, 03/2003 (BGVN 28:03) Decreased seismicity; fires detected on satellite imagery, 10/2003 (BGVN 28:10) Shallow volcanic earthquakes and continuous tremor recorded in October, 12/2003 (BGVN 28:12) November 2003:Tremor, type-A volcanic earthquakes; felt earthquake (MM III), 11/2004 (BGVN 29:11) News report cites increased activity beginning on 17 June 2004, 02/2007 (BGVN 32:02) Acidic crater lake and active solfatara investigations, 09/2007 (BGVN 32:09) 2007 field visit found degassing and increasing fumarole temperatures, 02/2009 (BGVN 34:02) Visual, geochemical, and geophysical observations during mid-2008, 12/2011 (BGVN 36:12) Sharp increase in seismicity in December 2011 spurs evacuation preparations, 07/2012 (BGVN 37:07) 2012 high seismicity, blasts, and subaqueous emissions; maps of complex, High-pressure steam emission, but little seismicity. VSI reported that during 28 January-3 February there was an increase in seismicity at Ijen in comparison to the previous week. The Ijen volcano complex at the eastern end of Java consists of a group of small stratovolcanoes constructed within the large 20-km-wide Ijen (Kendeng) caldera. Crater lake and Banyu Pahit river. The last subsection briefly calls attention to sulfur mining near Kawah Ijen's crater lake. Regarding floods and lahars, the crater lake at Kawah Ijen has a volume of ~30 million cubic meters, all or part of which could be expelled in an eruption or breakout due to crater-wall failure, an event that could send acidic brines down one or more of the drainages. Authorities posted a 1.5-km-radius no-entry zone around the lake's center. Malang Indonesien: Tipps für das bunte (und blaue)... Lombok Sehenswürdigkeiten: Die 15 beliebtesten Orte. Lake level was approximately 10 cm higher, water temperature at the foot of the fumaroles was 37-39°C and pH and electrical conductivity (EC) were -0.01 and 312.6 mS/cm, respectively. Just N of Pendil Djampit lies a fault with offset down towards the caldera (figure 17). Seismicity at Ijen increased starting in early April, when volcanic B-type events rose from 15 during the week ending on 5 April to 41 events during 6-12 April. This compilation of synonyms and subsidiary features may not be comprehensive. Both figures 14 and 15 emphasize the attendant lahar hazards. Although background seismicity typically had amplitudes in the range 0.5-5 mm, many of the larger amplitude air-blasts reached 20-40 mm with durations up to 18 seconds. Measurements of SO2, CO2, and H2O in the fumes at the foot of the fumarole mound were also made using a multi-gas instrument (Shinohara, 2005). Elevated seismicity during 27 June-11 July; lake-color shifts and odors. Huhu Mia, am besten du übernachtest in einem Homestay in Banyuwangi (siehe Empfehlungen weiter oben) und lässt dir dort einen Guide organisieren. über Get Your Guide) von Bali aus buchst, wird es um einiges teurer! Visual, geochemical, and geophysical observations during mid-2008. PVMBG reported that on 29 May a gas explosion at Ijen generated a plume that rose 250-500 m above the surface of the lake. The spectacular blue fire is ignited the sulphuric gas, which emerges from cracks at temperatures of up to 600 degrees Celsius. Im Jahr 1976 erstickten dort 49 von insgesamt 50 Gasarbeitern. Information Contacts: W. Tjetjep, VSI; BOM Darwin, Australia; S. Matthews, Univ of Bristol; UPI; ANS. Many other post-caldera cones and craters are located within the caldera or along its rim. On windy, clouded days, fumes were much denser and yellow in color, covering all surfaces in a veneer of sulfur. Es sind jedoch die Gase und der Schwefel selber, der sich an der Luft entzündet. During 16-23 April there was an increase in the number of shallow volcanic earthquakes (ten) in comparison to the previous week. Nicht abonnieren Crater lake conditions were the same as last year. The volcano remained at Alert Level 2 (on a scale of 1-4). Observation on 17 December revealed the strong smell of sulphurous gases in the vicinity of the crater; so strong, in fact, that the CVGHM reported that measurements of lake water temperatures had become difficult without wearing a mask. Continuous tremor (0.5-4 mm amplitude) was recorded during 20-26 October, a week when the number of shallow volcanic events increased to 30. We have gathered all available historical reports on Kawah Ijen’s activity since 1770 with the purpose of reviewing the temporal evolution of its activity. Der Kratersee – Kawah Ijen und der giftige Schwefeldampf. At Ijen these changes are attributed to underground and surface water. was für einen Guide hattet ihr für die Besteigung des Ijen? Einige Artikel enthalten Werbe- und Affiliate-Links. Summit Elev. [Correction: Later reports from observers indicated that the plume was likely from a nearby forest fire and not from Ijen. Der Raung dagegen ist nur 20 km entfernt, er ist wirklich der nächste aktive Nachbarvulkan. Maps, hazards, and Ijen's Merapi. Du kannst entscheiden, auf wie viele Tassen Kaffee du uns einladen möchtest, dafür einfach den Balken nach rechts oder links verschieben! A lot of rain in the past few months increased the volume of the lake, possibly contributing to a disruption in the system, though these seasonal changes were within normal ranges at the volcano. These eruptions were preceded by a tectonic earthquake with an amplitude >46 mm. . An accompanying detonation was heard 2 km from the summit and volcanic tremor was recorded with an amplitude of 0.5 to 1 mm. The scientists also applied the self-potential (SP) method, also know as spontaneous potential, that measures electrical potentials developed in the Earth by electrochemical action between minerals and solutions with which they are in contact. Guide brauch man auch auf dem Berg nicht, das ist alles einfach zu finden. One is the cone located to Raung's NE, Soeket (Suket) stratovolcano (2,950 m). Courtesy of VSI. The light green crater lake showed no degassing or temperature increase in late July. The increasing frequency may reflect better reporting since the explosions are usually confined to … It is characterised by a singularly high dissolved element load (>100 g/L) and very low pH. Continuous tremor recorded on 21 June had a maximum amplitude of 0.5-2 mm. Kelut eruption 13 Feb 14. Seismicity was dominated by shallow volcanic (B-type) and tectonic earthquakes (table 5). This increase was marked by a large number of shallow volcanic earthquakes (75). Im Vorfeld hatten wir bereits mit unserem Guide, den Freunde uns empfohlen haben, den Treffpunkt und die Uhrzeit vereinbart. About 5,000 people live within 10 km of the lake but farther away, many thousands more would be at risk in the event of large lahars. Könntest du mir die Kontaktdaten allenfalls weiterleiten? The lake water temperature was 26.8 and 34.2 degrees Celsius on 8 and 14 December, respectively. Die Vorrichtung mit zwei Körben, welche die Schwefelarbeiter vollgepackt nach unten tragen – auf ihren Schultern! Information Contacts: Dali Ahmad, Volcanological Survey of Indonesia (VSI), Jalan Diponegoro No. The first is a hydrogeologic zone on the E and NE rim characterized by a negative SP anomaly with a minimum at -100 mV (millivolts), an inverse SP/elevation gradient of -1.6 mV/m, and length of 1,500 m. This almost certainly represents inflow of meteoric water and groundwater. The ancient Ijen volcano emerged 250,000 years ago. On 15 December, CVGHM raised the Alert Level to 2, citing increased shallow and deep volcanic seismicity, the onset and increased amplitude of harmonic tremor 10 days prior, and visual observations as cause for concern. SP mapping of the active summit crater showed two main hydrologic structures (figure 6). These have caused very little damage but … Shallow volcanic and tectonic earthquakes were recorded (table 3). The mean error on gravity data was around 20 microGal, while the largest error was always less than 80 microGal. Und bevor du dich an den genauso anstrengenden Abstieg machst: Genieße den überwältigenden Ausblick und einmaligen Moment auf 2800 Meter. Huhu Adda, danke für den Homestay Tipp, den haben wir oben mit aufgenommen =), Hallo Huhu Viktoria, am besten du übernachtest in einem Homestay in Banyuwangi (siehe Empfehlungen weiter oben) und lässt dir dort einen Guide organisieren. The following week, the ash emission changed to a low-density plume and rose 25 m. In late September, seismographs registered an increase in shallow volcanic (B-type) earthquakes and the initiation of continuous tremor. Von dort oben hatten wir eine einmalige Sicht auf den Kawah Ijen – den Kratersee und den Schwefeldampf. Falls du noch nicht dagewesen bist – Scooter leihen für 5€ und selbst hinfahren mit Google maps. Es ist unbedingt empfehlenswert, sich im Vorfeld über einen Guide zu informieren und alles zu vereinbaren. News report cites increased activity beginning on 17 June 2004, The Chief of the local National Park has been quoted as having reported an increase in activity beginning on 17 June 2004. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility. Table 5. On 26 June, 4 deep volcanic earthquakes occurred. 2005: June Continuous tremor, volcanic and tectonic earthquakes through April 2002. But, in the end you are risking to set off prematurely what would have happened anyway. Magmatic volatiles can be supplied to the crater lake system by direct injection of magmatic vapours (SO2, H2S, HCl, and HF) via subaqueous fumaroles or via hot brines entering at the lake bottom. The crater lake's water was brownish-white and had sulfur agglutinate floating on the surface. During this reporting interval an intrusion appears to have risen to a shallow depth beneath the crater lake. That and many other web sites show photos of the mining process. Volcanological Survey of Indonesia, 1993a, Ijen Volcano: Journal of Volcanic Activity in Indonesia, v. 1, no. Figure 16 shows the Kendeng mountains defining the caldera's arcuate topographic margin bounding the N (with elevations up to 1,559 m). Crater lakes of Java: Dieng, Kelud, Ijen. Lake water became brownish green, and the surface was dark. The following week, 6-12 July, yellow-gray sulfur emissions were observed from the crater and a loud "whizz" noise was heard. In comparison to 2006, only the N rim of the crater showed a significant SP variation, with a decrease of SP of ~ 100mV. Increases occurred in both low-frequency earthquakes and tremor (both believed to be associated with the movement of fluids). Aber unser Guide hat uns super viel Zeit gelassen und einiges erzählen können. Jedoch habe ich ein bisschen Bedenken ob ich es da rauf schaffe. Volcanic tremor, recorded since 16 March, had frequencies of 1-2 Hz, and maximum amplitudes that decreased slightly from 1.5 mm to 0.5 mm. Throughout the report period, a "white-thin ash plume" [steam plume] was reported to rise 50-100 m above the volcano. And in the end, even just a few meters of less water … – Deine Finanzen in Indonesien Courtesy of the Volcanological Survey of Indonesia (VSI). Bevor wir wieder nach unten gingen, wollten wir noch einmal den Krater von oben sehen und sind bis an den Gipfel des Ijen gelaufen. There was a decrease of both gravity and self-potential between 2006 and 2007, followed by an increase between 2007 and 2008. Between 2006 and 2007, the gravity change was of ~ 1,200 microGal (~ 1.2 mGal) and at the summit between 2007 and 2008 at ~ 300 microGal. The lowest point of the caldera's N rim (~850 m) occurs near Blawan village at the breach in the caldera wall. – Der perfekte Reiserucksack A medium-density ash cloud rose up to 50 m above the crater during the second week in September. Es ist der Vulkan Raung. In the middle of the lake, the surface temperature was 23.5°C with a pH of 0.48 as a result of dilution by the rain. Ash was emitted during late July through mid-August. Phreatic eruptions occurred in 1796, 1917, 1936, 1950, 1952, 1993, 1994, 1999, 2000, 2001, and 2002. White-medium plume reached 50 m above the summit. Two phreatic eruptions occurred on 1 August starting at 1635; the sound could be heard at the sulfur weighing station. The temperature of the lake water fluctuated, though overall it decreased from 38 degrees Celsius in June 2019 to 20 degrees Celsius on 14 January; the lake water was 46 degrees Celsius during a period of increased activity from February to March 2018. Maximum tremor amplitude was 1-6 mm until 22 August when tremor was no longer continuous and maximum amplitude decreased to 1 mm. The gravity and differential GPS network of nine stations spread around the active crater, one at Paltuding and one at the volcanic observatory outside Ijen caldera were re-occupied each year. The coordinates cited in the header and Summary for this volcano refer to the approximate center of the lake (see photos of the lake in Photo Gallery and figure 4 in BGVN 32:02; Demelle and others, 2000; Takano and others, 2004). The average wind speed during this survey period (3 hours) fluctuated between 2.0 and 4.5 m/s and the resultant SO2 flux averaged 185 t/d, with a standard deviation of 60 t/d. Perspektiven für die Locals schaffen. The lake water was a pale green color, and the surface was covered by dense white vapor to a height of 10 m. Yellowish white vapor was being emitted from the solfatara field, and a very strong sulfur odor could be smelled. The Alert Level was then raised from 2-3 on 18 December following further increases in activity. Catalog number links will open a window with more information. Delmelle, P., and Bernard, A., 2000, Downstream composition changes of acidic volcanic waters discharged into the Banyupahit stream, Ijen caldera, Indonesia:Journal of Volcanology and Geothermal Research, v. 97, p. 55–75. In addition, 2 small explosion events, 6 tectonic events, and 2 tremor earthquakes occurred. Die Körbe wiegen bis zu 100 Kilogramm! The Alert Level remained at 1 (on a scale of 1-4), and residents and visitors were advised to not approach the crater rim or crater floor. On clear, wind-free days, fumarole temperatures were highest. On 12 July, the average gas concentration was similar, ranging between 1,600 and 3,000 ppm-m. During 1-14 December brownish-white plumes rose 50-200 m above the crater. After the gases had exited less than 50 cm from the pipes, temperatures had dropped below 120°C, the melting point of native sulfur. Der älteste Schwefelarbeiter, der immer noch täglich einmal auf den Vulkan steigt, ist über 70 Jahre alt. Eruptions The volcano remained at Alert Level 2 (on a scale of 1-4). Wenn du eine Tour im Voraus (z.B. Van Bergen M J, Bernard A, Sumarti S, Sriwana T, Sitorus K, 2000. The Alert Level remained at 1 (on a scale of 1-4), and residents and visitors were advised to not approach the crater rim or descend to the crater floor. That means in order to see it, you have to wake up in the middle of the night, drive to the base of the volcano, and hike up in complete darkness. A strongly active solfatara field (fumaroles that are characteristically sulfurous) is present in the SE part of Kawah Ijen's crater near the lakeshore, where sulfur-mining activities have existed for many decades (see figure 8 in BGVN 32:09). These observations were consistent with the precipitation of sulfur-bearing compounds in the lake (Delmelle and Bernard, 2000). Ijen has erupted six times since 1796, most recently in 1993. Seismicity the week of 6-12 October comprised four deep volcanic earthquakes, 21 shallow volcanic earthquakes, one emission event, and continuous tremor (0.5-2 mm amplitude). Dafür gibt es i.d.R. Euer Indojunkie Team. Fälschlicherweise wird es manchmal als blaue Lava bezeichnet. As discussed in earlier reports, Ijen is the name often applied to the larger complex consisting of a large caldera and associated cones. Jene Links und Partner ermöglichen die Aufrechterhaltung des Blogs. The circles shown on both maps are centered around the Kawah Ijen cone and its crater lake. Last Eruption: 2004. The acid lake was a pale-green color. These observations led CVGHM and VDAP to suggest an intrusion of magma had reached the point where it caused perturbations to the extensive hydrothermal system in the shallow conduit and crater lake. Researchers from Simon Fraser University, McGill University, and the Institut Teknologi Bandung (ITB) conducted fieldwork at Ijen from 6 July to 2 August 2007. They found that the laborers suffered more tooth and gum disorders. An increase in the number of shallow volcanic earthquakes was detected; continuous tremor emerged on 11 January, peaked on 15 January, and then decreased during 17-18 January. Diponegoro 57, Bandung, West Java, Indonesia, 40 122 (URL:; The Jakarta Post, Jl. The Alert Level remained at 1 (on a scale of 1-4), and residents and visitors were advised to not approach the crater rim or descend to the crater floor. Diese Schwefelarbeiter steigen täglich bis zu zwei Mal in den Krater, um dort Schwefel abzubauen und nach unten zu transportieren. During 9 December 2002-26 January 2003, the Volcanological Survey of Indonesia (VSI) reported that seismicity at Ijen was dominated by shallow volcanic and tectonic earthquakes (table 6). All observations indicated an increased concentration of SO2 in the crater lake. It’s completely worth it though, and I would recommend anyone and everyone to see it. These measurements almost certainly represent minimum estimates of the true temperatures due to heat loss along the length of the extraction pipes. Thousands of years of weathering have converted the pyroclastic deposits into rich, fertile soils which now support coffee plantations. Thermal anomalies were detected by MODIS throughout 2001 and 2002 adjacent to the Ijen (Kendeng) caldera. Both studies attribute these problems to exposure to sulfuric acid fumes. Information Contacts: Dali Ahmad, Volcanological Survey of Indonesia, Jalan Diponegoro 57, Bandung, Indonesia; Steve Mattox, 44 Robinson St., Nedlands, WA 60009 Australia; Johan C. Varekamp, Department of Earth & Environmental Sciences 265 Church Street, Wesleyan University Middletown, CT 06459-0139 USA. Given the recent concerns about activity in Kawah Ijen's crater lake, a simple model of the shallow crust in this area provides a way to help visualize conditions and processes in the subsurface. Journal 28, p. 243- 262. A coincidence of low wages and a small local demand for native sulfur supports artisanal mining at During 7-14 August, the number of volcanic earthquakes and tremor increased compared to earlier in August. Kawah Ijen is the centre for the youngest activity on this volcano with explosive eruptions from the crater being recorded up until 1936 (Van Padang, 1951).