Isotopes Add Support for Asteroid Impact: Osmium isotope analysis supports an asteroid impact 65 million years ago but cannot exclude a huge volcanic eruption

Physical Foundations of Rhenium-Osmium Method - A Review A newly acquired mass spectrometer MI 1201 by the Mass Spectrometry Laboratory will be adapted to determine rhenium and osmium isotope concentrations using negative thermal ionization mass spectrometry (NTIMS). We describe the principle of the Re-Os dating technique and the thermal ionization phenomena which lead to high precision isotope analysis on NTIMS.

Download Full-text

Osmium isotope analysis by inductively coupled plasma mass spectrometry

Journal of Analytical Atomic Spectrometry ◽

10.1039/ja9880300337 ◽

1988 ◽

Vol 3 (2) ◽

pp. 337 ◽

Cited By ~ 24

Author(s):

Alan P. Dickin ◽

Robert H. McNutt ◽

James I. McAndrew

Keyword(s):

Mass Spectrometry ◽

Inductively Coupled Plasma ◽

Isotope Analysis ◽

Inductively Coupled ◽

Plasma Mass Spectrometry ◽

Osmium Isotope

Download Full-text

Discovery of annual growth in a modern olive branch based on carbon isotopes and implications for the Bronze Age volcanic eruption of Santorini

Scientific Reports ◽

10.1038/s41598-020-79024-4 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Yael Ehrlich ◽

Lior Regev ◽

Elisabetta Boaretto

Keyword(s):

Sixteenth Century ◽

Bronze Age ◽

Volcanic Eruption ◽

Radiocarbon Dating ◽

Isotope Analysis ◽

Annual Growth ◽

Annual Rings ◽

First Time ◽

Archaeological Chronologies ◽

The Bronze Age

AbstractThe volcanic eruption of Santorini in the Bronze Age left detectable debris across the Mediterranean, serving as an anchor in time for the region, synchronizing chronologies of different sites. However, dating the eruption has been elusive for decades, as radiocarbon indicates a date about a century earlier than archaeological chronologies. The identification of annual rings by CT in a charred olive branch, buried alive beneath the tephra on Santorini, was key in radiocarbon dating the eruption. Here, we detect a verified annual growth in a modern olive branch for the first time, using stable isotope analysis and high-resolution radiocarbon dating, identifying down to the growing season in some years. The verified growth is largely visible by CT, both in the branch’s fresh and charred forms. Although these results support the validity of the Santorini branch date, we observed some chronological anomalies in modern olive and simulated possible date range scenarios of the volcanic eruption of Santorini, given these observed phenomena. The results offer a way to reconcile this long-standing debate towards a mid-sixteenth century BCE date.

Download Full-text

Scientists fear major volcanic eruption in the Philippines

Nature ◽

10.1038/d41586-020-00128-y ◽

2020 ◽

Cited By ~ 1

Author(s):

Smriti Mallapaty

Keyword(s):

Volcanic Eruption ◽

The Philippines

Download Full-text

Hubungan Pengetahuan Tentang Manajemen Bencana Dengan Prevention Masyarakat Dalam Menghadapi Bencana Gunung Meletus Pada Kepala Keluarga Di Rt 06/Rw 01 Dusun Puncu Desa Puncu Kecamatan Puncu-Kediri

Jurnal Ilmu Kesehatan ◽

10.32831/jik.v5i2.143 ◽

1970 ◽

Vol 5 (2) ◽

pp. 01

Author(s):

Didit Damayanti ◽

Pria Wahyu R.G ◽

Muhanni’ah Muhanni’ah

Keyword(s):

Disaster Management ◽

Volcanic Eruption ◽

Sampling Technique ◽

P Value ◽

Cross Sectional ◽

Head Of Household ◽

Correlational Research ◽

Level Of Knowledge ◽

Independent Variable ◽

Negative Impacts

Introduction: Disaster management is a dynamic, continual, and integrated process as to increase the qualities of the actions which are relevant to the process of observation and analysis of disaster as well as minimalizing the negative impacts, mitigation, readiness, early warning, immediate emergency, rehabilitation and reconstruction. The aim of this research is to analyse theconnection between disaster management and the prevention of community breakdown in order to face a volcanic eruption for every head of household. Method: The design of this research is correlational research with a cross sectional approach. The demographic group that is used for this research is the head of households in Rt 06/Rw 01 dusun Puncu desa Puncu, by using the purposive sampling technique which has been collected from the sampling of the 33 heads of households. Independent variable is the knowledge of disaster management, and the dependent variable is the prevention of community breakdown in the handling of the disaster. The data has been received by using the questionnaire, and the results have been analysed by using spearman rho test. Result: As according to the statistics test, it is found that p-value= 0,000 on the significant level (α) = 0,05 and r = 0,752. It is concluded that there is a connection between knowledge and the prevention of community breakdown in handling of the volcanic eruption in Rt 06/Rw 01. This research shows that the level of knowledge within the community about disaster management and prevention in handling volcanic eruption has been increasing. Conclution: This is shown by the capability of the community in mitigating the effects of the disaster. It is hoped that the community will further engage in training education and simulation to reduce the negative impacts of a disaster. The location where the participants resideis Kelud Volcano, and it is therefore hoped that the communities are willing to participate in better handling of any disaster by joining the education training and simulation; Kata kunci : Pengetahuan, Manajemen bencana, Prevention.

Download Full-text